Indeed! That's one major consideration I have about reinstalling Pop!OS without the Nvidia drivers. That apart from not breaking Photoshop 5.5 running in Wine 8.0.2, that it may also stop that horrendous unrecoverable crash from altering icons that preexist in the dock.It may well be the graphics driver and it's associated firmware that's giving you all the dramas. That could also be what's responsible for the crashing when changing icons.
Despite all the stress of failure after failure, it has been an interesting learning experience. Though one aspect of it involves just how sophisticated the issue of icons may be. Where it takes more than a single scalable icon to operate successfully in this particular OS. I'm just not sure. But I do know you can globally change all the icons installed as a theme. A few posts back it shows how I successfully replaced all the default icons with Numix icons.
In the back of my mind I am also trying to deal with the reality that the technology will continue to evolve, and likely leave Photoshop 5.5 behind in its wake. I just wish I could understand what Linux Mint is doing to accommodate fools like me. I figure there are probably less then ten people on the planet trying to keep this software running on any platform in 2023!
I created a new .iso file from System 76, to install Pop!OS this time around using open source video drivers. So I should know where I stand with this by the end of the day. But it sure is exasperating for me to continue. Ugh....