Keeping it a little vague for privacy.
I was one of those people who considered herself lucky to have a “cool” boss. She’d take me out to dinner after a successful project on her dime; comped travel to amazing locations as a business expense, and was always friendly — we talked like friends not employee and employer.
Then I developed a permanent, non curable condition. I can still work but I need a few accommodations, basic stuff like if there’s heavy lifting, I need breaks. I’m not able bodied in the way I was before but I was ready to dive back into work to not leave our team hanging.
She turned on me in a day. My performance reviews went from glowing to absolute shit. We went from laughing at work all day to her being furious at me for taking breaks (which were contractually entitled to).
I learned she didn’t like me, she liked that I worked through breaks and didn’t complain about wage theft when she needed me to stay late. She didn’t see me as a friend, but as social proof to other people.
Your boss might be nicer to you than the stories you read on here, but it’s all contingent on you being exploitable. The moment that changes, you’re worthless to them.