No dude. Because they aren't fun for what they reward. You get 2-3 pieces per week and you kill 10 bosses. These bosses all have an amount of useless trash to go through and are long fights that require time to prepare and organize. Raids are not like this anymore on other games anymore. Only in WoW are they so inconvenient you need multiple hours to do it for little reward and where you spend so much time not in the actual boss fight. The boss fights are probably 50% of your time spent in a raid. Not to mention you don't kill every boss in your first week. There is progression with many wipes where you get nothing. It's a waste of time.
People like Mythic+ even though it rewards WORSE gear because it's not such a time waster and unfun experience. If you force people out of mythic+ and into the raid, guess what? People will leave even more cause most people just can't commit to the time sink that is raiding. Mythic+ is the only good thing about WoW. Go ahead and break it. See what happens.