I'm thinking these tools might be better utilized for creating user interfaces. As you say, a few pixels wrong here and there can be easily remedied and has little, if any, impact on the functionality of the software. You could use an AI tool to get you 80%-90% there - which would be a big help.

With regards to coding, AI assistants could make an excellent intellisense. That would also be a big help. I don't need the tool writing huge swaths of the code for it to be useful.