I've been a software product manager for 20+ years. I know products are shipped with known and unknown defects. There's always a trade-off and you ship the best possible product you can. It does not mean I'm trying to screw my customers or do something evil or bad, it just means that you get to a point you have to call it done and ship the best product possible. I'm sure Apple product managers are even under greater pressure than I am to not only make sure it's right, but ship on-time.
Apple mangers or you, exactly the same approach , a decision is made when something is fit for purpose, on-time means hitting an imposed deadline while removing critical showstoppers .
Apple software ships with lots of bugs these days, they are not special , they are just like you and me who work in the software industry . If anything, they are very slow to react to critical issues that are identified, they still believe in big drop maintaince patches to resolve issues, which is very old school thinking.... 2015 they finally got a responsive website...