I can't point to any one thing to call the peak, but there are a few.

1) Not really a peak at all, but I just observed trans rhetoric and behavior over the years from various outlets like the original TumblrInAction. Nobody with the truth on their side needs to act the way trans activists do. They deny empirical reality, exhibit obvious signs of delusional narcissism, rationalize away obvious fetishism, invert their own ideological narratives on a whim whenever it's convenient, act abusively if you aren't 100% on board with affirming and celebrating everything they say or do, and so on. Worse still, they prey on lonely, often mentally ill teenagers online, acting eerily cultishly. This subsaidit is full of examples of all of these things.

2) I learned about John Money. He coined the terms "gender" and "gender identity" (words I have since endeavored to stop using, but still slip out out of habit at times); The experiment he used to derive the whole idea of gender as completely socially constructed and not a psychological extension of human sexual dimorphism, in addition to being horribly inhumane and outright illegal in one respect (he made case study subject David Reimer and his brother, both children, simulate sex acts on each other and recorded it), discredits that very idea. He, and seemingly the entire psychological establishment, just pretended otherwise and kept going with his narrative.

3) One of my least favorite archetypically trans behaviors is their tendency to invade online social groups, gun straight for moderation positions, and reshape the whole group around celebrating themselves; You can't voice dissent under threat of banning you or destroying the group altogether if it's sufficiently widespread. I thought my small, private, extremely niche group of best friends would've been a safe haven from this, but I was wrong. A member who had been dormant since the beginning suddenly became active, came out as trans, and started influencing the whole rest of the group to the point that I had little commonality with them anymore. I could've tried putting my foot down and removing him the moment I sensed incompatibility, but I try not to mirror behavior I hate in others under the pretense of "it's okay when I do it." Now that uncritical trans support has become the de facto litmus test for moral purity in spaces and among people that aren't explicitly right wing (which I also don't belong with, because thinking for myself has led me to become very heterodox), I don't even know where to find friends anymore without running the risk of others ejecting me over the trans issue and sending me back to square one.