I think it's very on topic as you asked OP, what you could do against the TRA avalanche. Now I don't think you are the close to being the right person, far, far from it in fact, but you could speak up against the abuse of trans widows...but it's best you leave that to the women who have experienced of that to speak with their own voices. Like women and the female experience. Perhaps you could put your ex wife in contact with the website so we could hear about the abuse she suffered in your marriage directly from her?
You could stop using the word 'woman' in your self-assumed and imagined place in society and refer to yourself as a man, though I can't see that happening either.
You could go to Trans groups and ask them what they are doing, perhaps feed them some of the suggestions here, get a movement going, instead of asking women to do the intellectual Labour of coming up with ideas for you to do. There are people like yourself who recognise biological sex, you could look them up and ask them for advice or ask them what action they take. Maybe even ask if what they are doing is working?
I noticed neither of your claimed hashtags exist, perhaps you have a closed Twitter profile. If so, I'd undo that so your alleged tweets can be found and retweeted.
I'd ask if you have ever used a ladies toilet or public space "as a proud transwoman" but I think I already know the answer to that. As with Debbie Hayton, I can only think about Stephanie Hayton when I see or hear Debbie. I hope your ex wife is ok, I very much doubt she is 'fine'.