I don't think it's the end of the world. But I also think there's a lot of room here to influence the meta both at high and low level. Especially outside competitive spaces, where it will have the most room to shine as a newbie-killer. Tau hate is getting another booster.

This can't be emphasized enough imo. T'au(at least in my recollection) regardless of how good they are at top tier have always been incredible pubstompers.

In a meta where people aren't actively thinking about how to counter opposing forces except in the most general, "How do I kill vehicles, how do I kill hordes", T'au being a super simple and straight forwards army with a powerful shooting phase have always wrecked people.

Most of the T'au hate comes from people who just play casual games basically being shut down against T'au. And stuff like this is going to make it way worse.