No, I use stock Pixel firmware. Google did a phenomenal job on it. The launcher is very good.
I know there are privacy concerns for some folks, but I have a smart home so that ship has sailed for me. I secure my Linux desktop and enjoy convenience on my mobile.
Honestly you could not get me to go back to iphone after using Pixel. I still use a iMac, MacBook Pro, and iPad Pro though. I'm not a fanboy for any brand, and android tablets suck compared to iPad. The phones are hands down better devices in my usecase though.