The problem is you waited too long. Also, there is no single issue like exploding battery or camera nonfunctioning that affects every single user of the device. It's more like random bugs and even though some are more widespread none incapacitate the phones even if they are annoying. All phones have random bugs, and some have manufacturing defects, but if your device has a major bug or defect you are supposed to return it within two weeks.
WM10 has a ton of bugs, and some have been fixed, but unfortunately not for everybody, which is what you're experiencing. My phone is much, much improved over the version I got in December, but plenty of issues remain, though honestly none rise to the level you are describing. My camera issues were the most serious and now I can record 4k video reliably.