There always the aspect of keeping old hardware alive and useful.

Disabling Manifest V2 will break a lot of extensions apparently.

For general use AI image manipulation, you may want to look into Stable Diffusion.

RMS’s biography “Free as in Freedom” seems to be under the GNU Free Documentation License, incase that’s anything to go by.

Have you heard of GIMP?

If that isn’t what you need; this site may help you: https://alternativeto.net/software/adobe-photoshop/