Honestly, this is the only way they'll ever do anything about mods, although it'll probably end up being an all or nothing situation...
I think mare will eventually push them into that situation though. Eventually it'll become a situation of why buy cosmetics on the mogstore when you can install mare, sync with a bunch of other people and have a lot more options.
I'm already at the point where I feel that mare has gone too far, and if all the people posting on the forums about inclusivity actually cared about inclusivity, then they'd probably feel the same way.
I have a hope that eventually mare will evolve to the point where there'll be public servers that people can join for all the cosmetic mods they're wearing to show up to others on the same server, and that it'll get popular enough that new players are advocated to use that instead of bothering with in-game glam. Then SE will definitely take action.