This is a lesson that all senior developers know pretty well, that is why companies rather hire naive juniors, instead folks that already mastered how the game gets played, and cannot be sold on company mission, values, or whatever snake oil gets talked about during interview process.
And while I was still employed as a seasoned developer (before recently retiring) I felt it was my role to pass along some of my cynicism to the new hires and younger devs. Some of them seemed a little surprised to see me call bullshit in a group meeting. (Good luck to you boys and girls.)
Meanwhile, they all roll their eyes at the "jaded greybeard" advice. I know, because many years ago I was doing the eye rolling. I guess some lessons really can only be learned through experience.
The important part is that when they see the first thing you warned them about, they remember about all the other things you have also mentioned.
I like to think they'll remember some day.
Not all. You're talking about douchebag companies.
If I try to hire someone in the future, and I'm talking straight with a candidate, about how we do things and what we're looking for, and they just nod their head, like I'm going through BS rituals that your stereotypical MBA thinks is professional to say but not mean... I will be sad.
And if, while they're BSing me, they're congratulating themselves on having "mastered how the game gets played"... I will be angry.
(This is another reason I won't Leetcode interview. It's signalling that the company is all about disingenuous baggery theatre.)
Unfortunately for you you work and live in an environment created by other companies and its likely that if your company succeeds its one acquisition or bad top level management play from invalidating everything you implicitly or even explicitly promised.
I have worked for "good companies" before - and they have a tendency to make money and be targets for bad companies, add enough zeroes and even the good guys sell.
Which are the non douchebag companies?
Start by eliminating all publicy traded companies from the list, and you've increased the percentage of non douchebag company in your list by quite a bit.