"Full stack should be effortless"? What? This is definitely not coming from anyone other than two groups: random HN people with an axe to grind, or people trying to diminish the value of the profession.
Hiring for web is difficult, salaries are historically good, people complain about complexities, including yourself: "quite complex", "super complex", "nobody has a full picture".
Nevertheless: React proves that it's not effortless. There are complexities in there and kicking and screaming saying "it was supposed to be easy!!!" won't change the situation.
"It should be simple" yeah Crypto should be simple as well, so there are no bugs. But it's not.
Maybe learn to value other people's jobs.