Politics, period, has further turned the platform in to a cesspool. Removing a single account is not going to correct that course. I guess this is just what happens when a social or media outlet becomes mainstream. To illustrate, I'm sure everyone has enjoyed a coffee shop, bar, or restaurant that later morphed due to loss of niche crowds or mainstream success. Rather than trying rollback time, best to try and accept it for what it is. If Twitter's reality does not suit your preferences, move on. We don't own it.