I moved to towers for the same reason years ago, but I basically never do major component swaps like I thought I would.

I've since realized that having a tower is really nice for other things though, namely maintenance and cleaning/airflow. My rtx 2060 seemed like it was on its way out a year ago (thermal throttling, even on way lower settings than it used to be able to run just fine), so I took it apart and replaced the thermal paste. Runs better than when I first got it. Got some new case fans recently as well and the whole thing runs cooler, quieter, and they use less power than my stock ones, which is nice.

Obviously the thermal paste thing applies to laptops as well, but laptops can be very tough to get open and dig around in.