I got a renewal notice a few months ago, and they wanted to raise my already pretty high rent by like 15%. It was higher than what they charge for brand new apartments, not even counting leasing incentives. I made a counter-offer and got told 'we don't negotiate'. The propublica article (https://www.propublica.org/article/yieldstar-rent-increase-r...) talks about how exactly this lack of negotiation / removing the human element lets them drive up rents across the board.
It's insane, and toxic.