Fast charging is 100% convenience for the end user and marketing material for the company. Fast charging is just dumping more electrons into a battery quicker than slow charging. I don’t think battery tech has adapted that much to be able to handle this so AFAIK we’re just normalising abusing our batteries. Did read an article that batteries that we’re slow charged, also discharged slower as well.
Fracturing the space is way more destructive than whatever you mean by destructive moderating, since the moderating will only affect some communities and even within that, some users while defederating will split the user base.