Yes, I also reviewed my position. I was definitely inclusive/a trans ally - I saw no reason why there should be any issue in including transwomen in my feminism. My impression was largely formed by reading things like the series that ran in the Guardian about a transitioner, and other broadly sympathetic stories about transsexuals.
Then in about 2014 someone referred to me as “cis” and I didn’t understand what they meant. They told me, and suggested I educate myself.
So I did! I read everything I could get my hands on, and talked to as many people as I could, before #nodebate really started to kick in. I read Caitlin Jenner tell me that the hardest thing about being a woman was deciding what to wear. I read about the Sylvia Rivera Law Project and Laverne Cox fighting to have Synthia China Blast, a violent child rapist and killer to be freed because of their struggle to be recognised as a woman within the penal system. I read about the targeting and subsequent shutdown of the women only Michfest festival due to its policy that transwomen, although welcome in a specific camp, were not permitted full access.
I changed my mind about my support because I could not help but notice the disastrous impact that the push to replace sex with gender in public life has had women’s rights, and women’s realities, and I’ve not read or discussed anything since that has disabused me of that impression.
You won’t change my mind back by just saying “don’t you think you’re kind of horrid?” 
give women here some credit, if you can, that we have got where we are by a process of reason, based on our experience and knowledge, and if you want that to change, you’re going to have to use reason to make that happen.