This is a whopper of a lie. :p
KSP is not "an hour" of time. KSP is "Oh, hey, I'll sit down for a quick Eve mission at 8PM, hrm, that didn't work, ... ugh, more struts ... right, I'll solve that with a few more boosters ... oh bleep how can that be a relay sat blackout NOW? ... how can it possibly be 6AM? Is that the sunrise?"
Wonderful game, absolutely worth spending money on if you have any interest at all in space. But "an hour," you will not spend on it.
And in 1 hour without ever having played in KSP you probably can lift of the ground and maybe go straight vertically out of the atmosphere.
If you do have a human being teaching you the first hour you can go to orbit definitely. Something as stupid as "you don't go to orbit by going vertically" is very helpful for an inexperienced player.
Installing this will affect your sleep schedule, your sex life, your relationships, and you will be late for work.
Had a summer job at a web-dev shop some years ago already where the boss had a burn-out, but then to get back to a nice work/life balance he played ksp the entire afternoon at work and let all the devs play too :p
I installed it last weekend out of nostalgia. Turns out you're automatically opted in to analytics that includes identifying information about your specific machine. Opting out is not possible; the game shows you a button which is apparently supposed to open a web page where you can delete the information collected so far but not opt out. (I say "supposedly" because the button didn't do anything for me when I clicked it. It's what I gathered from reading about it on forums.)
So you have to discover that you have to edit two config files to suppress some of the analytics, then download some fan-made Unity Analytics DLLs, that were reverse-engineered from the originals but are no-ops, to suppress the rest.
Fuck that shit.
Another one that ranks very well is skybrary.aero on things like de-icing procedures, safety regulations etc.. It's created by Eurocontrol so somewhat official and the information seems very accurate, but they are not really an official source you should use for actual flight planning.
Another thing I found, due to the full n-body integration Principia adds, is that I was able to correctly guess which side of Kerbin the Mun was on due to tiny perturbations in my craft's equatorial orbit.
KSP is enough to give you an intuitive understanding without the gritty details of which switches in which order.
That said I did just pop up a video of orbiter to check what I remember... And the oceans are solid.. at least KSP has some model of water landings?
either way, the article reaches about the same conclusion in a quite direct way.