I can only assume but have you actually talked to LINE to see about things getting done? You're answer to this problem, just post somewhere else, doesn't address the main problem. That problem being, whatever main issues LINE is having. You're just moving to safe spot while the problem continues to grow in its current location.
In fairness, I don't think this action is wrong, anything to help yourself as a creator. Especially in moments when things are being worked on and you may not be sure where the future of these issues will stand. But as an LGBT creator and advocate, you would understand this.
It's like if someone said "If you want to support LGBT, why don't you just move to a country that supports it?"
Yes, sure you can do that and it might be a good start to help you as an individual. But that won't fix the problem at the heart and if you aren't willing to work on that, than nothing can be done. So in the end, your answer of just "moving material to Tapas" isn't necessarily wrong, or even unhelpful for creators themselves.
But it does not answer the main issue and until that main issue is answered, it will continue to grow.
@SleepingPoppy
Merely pointing out how reactions from the audience can affect things, considering that, from what I can tell, you seem relatively worried about this issue as well.