Not all apps do it and some push all notifications through a single channel (and some manufacturers hide the granularity options in advanced settings, I'm looking at you Samsung) but at least it exists.
It’s not JUST marketing either. I don’t want to be interrupted with a reminder to check my lint filter. I do that literally every time I change the laundry. But I can’t disable that pointless alert without disabling ALL alerts (and you can rightly question whether any alerts from a dryer have value, but that’s a different discussion).