There will always be TRAs, but it it seems that the movement is losing ground and that more and more people are becoming tired of them. I give them 3-5 years till the movement becomes pretty much dead. I think it will be a mixture of people getting annoyed by them and the TRA allies getting bored of the topic, after awhile there's only so much you can say.
What topic do you think will replace them?
As long as men are watching porn, we will have a steady supply of AGPs, unfortunately, and they are the ones who make the most noise and make the most demands. :(