I'd say that wanting the player character to wear clothing made by Tataru so she can drum up business counts as 'personal investment':
Which in itself adds weight to what people are saying. That their character isn't just being allowed to go off on an adventure with no strings attached and is once again just a useful tool to the Scions. They're friendlier about it than they were during the days of ARR but the status quo hasn't really changed which is unfortunate.
There's plenty of stuff in the game that many of us like and comment on. This is a platform to provide feedback and is being used as such. It's not really the business of paying customers to try and dictate what they should and should not discuss, as far as I see it.
I daresay it isn't difficult to go and look at people's lodestone profiles to see what they engage with in-game, either. Especially since it's public information. Just because someone isn't thrilled with the direction the story is taking it doesn't mean they're not invested in other aspects of the game. I would have thought that to be obvious...but apparently not!