The pedagogy you describe has a name and it is called "Lying to Children" by the people who came up with this, and its based in Paulo Freire's work (Pedagogy of the Oppressed), hitting a peak around late 1990s. The same Marxist groups that brought wokeism to the masses.
This has largely taken over starting in the lax hiring standards that came about as a result of Sputnik late 60s. By 1978 most teaching books abandoned the First-principled approach favoring this approach instead.
The First-principled approach to teaching began with the Greeks/Rome (Trivium/Quadrivium); the process starts with an objective real system which you break observations down into core relationships, from such intuitive relations you then build up the model of relationships to predict future states within that same system, checking each time for correctness, and deviations to eliminate falsehoods/assumptions made.
The "Lying to Children" approach, is an abominable deviation of that process, or what many referred to without proper definition, as by-rote teaching, starts with an inherently flawed/fake system where you must learn to competency true and false things at the same time to progress to the next level of gnosis or mastery.
Upon each iteration in the path you are taught increasingly more useful versions of the ultimate model expected, but are subjected to psychological torture in the unlearning of false things which were learned to competency and will stonewall further progress; while relearning the true principles. Those who can put perceptual blinders on are able to pass this filter at the cost of intuition, as are those who tend towards lying/deceit. The process is by purposeful intent torturous, and intelligent people are most susceptible to this kind of torture (it is exactly that).
In Electronics, the water pipe analogy is one such example of this type of teaching method when the behavior of diffusion of charge is much more appropriate.
There are also induced failure points that operate on a lag, to plausibly prevent people from going into science backgrounds using this same methodology. Setting them up to fail through devious changes in grading and structure designed to burn the bridge (so you can't go backwards and are left stranded unable to move forward).
You are right to distrust teachers that do this. They are truly evil people (no hyperbole). Good people don't torture people and gaslight them into thinking its teaching. It doesn't matter if they didn't know the origin of the things they were taught, part of the responsibility for positions of such trust is to understand and comprehend what you do; and many just believe you aren't learning until you are struggling.
Evil people can seem nice, but what makes them truly evil is the wilful blindness towards the consequences of their evil actions; where its to the point where they repeat such actions unless stopped by external force.
Evil actions being defined as anything that does not result in the long-term beneficial growth of self or others (action or inaction).
They get to this point through repeated acts of self-violation until they no longer resist those evil choices (non-resistance), and then in fact accept it, subjorning themselves to it and becoming its plaything.
False justification for example is one such self-violation.
There are a lot of evil people out in the world today because society has followed Tolstoy's approach to non-resistance to evil in much of the policy.
These people think they are good, or at worst not bad, and you recognize them by that blindness, and inability to choose differently.
Torture is the imposition of psychological stress beyond a certain individual threshold. From that point, rational thought degrades, involuntary hypnosis occurs, eventually culminating in psychological break towards disassociation or a semi-lucid state of psychosis seeking annihilation (suicide or mass shooter types).
Wouldn't it be sad if the majority of intelligent people are actually killing themselves because of these things.
Most people today don't recognize torture because its become so sophisticated and their individual education of things have been deprived by past generations, purposefully so.
Torture includes elements, structures, and clustering, and if you'd like to know more about the process to recognize it you can read the following books (in order), most of this is common knowledge in certain fields (foundational back in the 1950s).
Robert Cialdini - Influence (psychological blindspots leveraged for clustering without distorted reflected appraisal)
Joost Meerloo - Rape of the Mind (1950s) - Overview and related factors
Robert Lifton - Thought Reform and the Psychology of Totalism - Case Studies of PoWs returning from Mao's China during Korean Conflict covers structuring and elements.