After reading some rants abut stupid project managers I remembered this situation that happened to me a decade ago.
One of the tasks was to move some html component to different place on the page. The whole page was a mix trs and tds and to achieve that I had to rewrite the whole page structure. I estimated around half a day to complete that task. It was my first job and I was not great back then, but still it was reasonable amount for this task.

Now lets introduce my PM : the guy was a complete tool. He was a former hardware store manager ( ͡° ͜ʖ ͡°) and had no idea what we were doing.
He started ranting how on earth such simple task can takes so much time. I started explaining myself, but he wasn't listening. Instead he started sharing his screen, he made a screenshot of the page, pasted it to the ms paint, cut the component, and moved it to desired place. Then he said : It took me like 10 sec to complete the task and I have no experience, maybe I will replace you?
I was speechless. I had no words and I just kept silence.
Then he said he would reassign this task to X, because he is competent.
X spend more then 4 hours and I heard no apologies.