EDIT: Blizzard had very recently created this post which seems to imply a formalization of (or reiteration of their position that) all boosting/”traditional” services in the game, which will likely extend as widely as possible, including to those around housing, are completely acceptable and thus endorsed. I wouldn’t have posted had I seen this as it all but guarantees any concern around this is a non-issue to them.
Ion has mentioned that co-decorating privileges are something they want to do, and obviously creators and players know this means that there are markets waiting to be stood up for people to decorate your house for you for gold. This is something Blizzard suits are likely aware of and even thrilled about as it means more tokens sold, but it undermines the entire point of a purely intrinsic pillar of the game existing and turns it into just another gold-driven activity.
I think one could argue that if you don’t care, you’re free to do whatever you want to your own house for free, but this misses the point. Just like M+, just like raiding, it creates an entirely different incentive structure revolving around making money by playing the game for others and will result in those who don’t care as much about their house simply paying someone to do the WoW equivalent of interior design/decorating in lieu of encouraging players to enjoy something that isn’t “number go up”. In effect, the pillar becomes “number go up” for anyone who logs in to grind M+ and then doesn’t engage with anything else except to flex their house they paid for the decoration of (and the same demo will have done 0 endeavor tasks as it doesn’t have much gratification for the “number go up” gamer).
I’m not against co-decorating (I think this is great on its own), but WoW is far, far too economy-driven as is and this will absolutely corrupt a newly born “pillar” with this same nonsense if care is not taken to keep “free market” corruption away (look no further than the trade services channel to see what is allowed even after the M+ boosting communities were prohibited. This is all housing will be for some players and eventually for the pillar altogether).