If it matters is subjective. But personally I stop reading when I notice it’s AI text because there is never anything in it worth reading. It’s just a prompt expanded in to paragraphs of filler text.

This kind of tool doesn’t need a whole Apple style marketing page to sell you on it.

It also signals effort to me, when I see vibeslop text I know the project most likely is a one shot weekend project full of issues which won’t be resolved. I’ve seen good examples of AI use in open source, and those projects write the readme and website copy without AI.