You’re right and we should use that. But many people also aren’t capable of doing that. I sat down with 2 friends a few months back and they wanted to replace their iPhone batteries, one also needed to change his display. End of the story was that the previously working display didn’t work anymore :( I thought it would be fine and he did only one time do a little heavy pull which may have been why it stopped working, but there’s always this risk now…