I’ve forced-restarted the phone multiple times. In fact, I typically force-restart every night after I check for app updates and perform the updates. I’ve been doing this for years.
Force restarting (aka hard reset) your phone when it’s not frozen is not a good idea as it doesn’t allow the phone to finish writing any data to the SSD like it does when powering down normally. That can cause data corruption which can end up being backed up and restored to a new phone.
It’s the same reason you don’t shutdown a computer by just powering it off. It may work fine most of the time, but eventually you’ll have problems. I’d recommend doing a OS reinstall/restore from a computer.