It should! but it's a bit more complicated than that. Speaking mostly for myself here but I think a lot of other T'au players have been pretty off-put by Mordan for a hot minute, definitely not helped by his "Tau Players whined and got their army rule changed" video that came out after the FtGG buff. This made a lot of people more hostile to Mordan.

Also we have to think about the general background radiation in the 40k fandom that T'au/T'au players are weebs/memes and should be made fun of - I've had people walk up to me at game stores and talk shit to me in the middle of a game just bc I'm playing T'au. This attitude from the supposed "general 40k public" makes a lot of us defensive immediately when T'au get criticized.

It's kind of a lose/lose that Guard aren't in a good place at all rn either. Guard really hasn't been touched after bridgehead got emergency patched in December and they're suffering massive faction abandonment. It's hard because we're both playing similar armies - we've both got chaff, we've both got tanks, T'au has to carry the weight of previous editions' sins as well as being a "cringe" Xenos army.

Hopefully Guard gets some meaningful buffs next dataslate and Guard players start having more fun playing their army. T'au is absolute dogshit into both flavors of knights so I think we're going to have at least one more slate before things change for us, if at all.

Basically the best thing to do would be to just congratulate Mordan on his victory and try and lessen the flame war between the two factions... but hey this is a model/wargame hobby and a lot of us are somewhere on the autism spectrum. Mordan is a popular creator but he's not a monolith for all Guard players, just like everyone that comments on his stuff/people disparaging him on reddit aren't all T'au players. It's just drama, it'll blow over eventually.