I don't know if this will replace htop for me. The main feature seems to be 24 bit color and some aggressive styling. I'm too old fashioned for that.
I kind of avoided it too, htop, bmon, iotop and nvidia-smi worked fine as it was. But eventually came across it for the Nth time and finally tried it out, it's basically all of them in one, with some nicer graphs and customization. Do I require it to do my job? No, but with it I need 3-4 tmux panes less to see the same info. Also does most of the stuff I used htop for, sorting by different things, filtering by letters and easy to kill the currently selected process.