Depends on the definition. If we go by the definition a lot of users here seem to have, Linux itself would no longer be considered a FOSS project, which imo is completely ridiculous.
If we're talking about literally vibe coded from the ground up projects where the devs don't even know what the code inside looks like, yes maybe it should be removed or given a post tag once we have the feature.
Personally I prefer to keep a discussion going even with heavy AI coded projects, we're living in interesting times and I am convinced to keep an open mind about what engineering will look like going forward and what doors it might open for the FOSS community despite its flaws and negatives.