To be fair, adding apparently simple undo functionality to a complex transactional system can be fiendishly difficult.

I was interviewing at a megacorp a long while back, my interviewer was solely responsible for the pie charts in some old application. He mentioned in the interview that it was totally feasible to run your own startup on the side.

An acquaintance of mine worked at Google for one entire year on the functionality of one single button in GMail (I don't recall what it was specifically). He was very disappointed, left and launched a startup.

My first job out of school was writing an OS from scratch for a new device. This was at a FAANG. Couldn't be happier. It depends on the opportunity.

That sounds like quite literally hell on earth. Thanks but no thanks (never mind the legal pandoras box of running your startup at your day job.)