Everything else aside, not sure that's necessarily the case when it comes to this issue (or really a variety of other ones that a variety of people experience).
Ultimately it appears that there is an issue and those who experience it and are negatively affected by it should be reporting it to Apple and following up on it with Apple as best as they can to hopefully get the issue addressed.
Maybe so, but they have said that they're aware that some bluetooth car stereos and speakers will be affected by the changes and that this is expected behaviour. So they clearly don't think it's a big deal, and they certainly aren't going to start making crazy threats to random people on forums over a headphone volume function lol.