It can only be an alternative if 1) it is an exact clone of Adobe apps including feature set and the UI/UX, or 2) it has a different design but provides the same features along with good UX and can help user complete various tasks effectively (which requires tons of UX research on its own). Even small details can matter.

Which is why people still go to Adobe products despite similar products exist, especially for people who are getting paid to use software. They want things to simply work.

I very much doubt a vibe coded application can achieve that, but I'll be happy to be proven wrong.