A hundred times this. The button flex cables on Sony phones are very easy to damage, and there is absolutely no reason to remove them just to replace the display. Unless your display assembly came with a complete frame. Then you have bigger worries, and this guide is incomplete.
Sure they have to do things to make them thinner "because reasons", but the lack of first-party spare parts, pull-tabs or service guides is harder to excuse.
Different people have different senses of humor. While the quirkiness doesn't make me laugh outright, it doesn't bother me in the slightest.
If it really bothers you that much, I can only recommend you lighten up.