Breaking news: there are tons of trans pedophiles. "Jessica" Yaniv is a prime example, as is Sophie Labelle, as are several other cows on the farms.
On one hand, trans people tend to get awarded Get Out Of (Societal) Jail Free cards for the sole act of claiming that they're magical trans cinnamonrolls. Any wrongdoing is the fault of Society, Da Patriarchy, Tawxic Wh*te Males, Trump, Biggits, Transfobes, or Your Own Ignorant Misunderstanding Of The Trans Experience.
On the other hand, FtM tend to not be as bulletproof as MtF trannies. The aforementioned Sophie Labelle hates FtM people (though he'll never outright admit it). Females/girls/women are inherently better in the eyes of SJW types, so for a beautiful and stronk womyn to turn herself into a gross, nasty, perverted man instead of being an adorable and precious lesbian is an act of betrayal.
We're already seeing people insist that we use Lainey's "chosen name" and "he/him" pronouns (anti-O noobies, I'm looking at you). That in itself shows that they're more concerned with Lainey's feefees than with prosecuting her for child molestation/solicitation/child porn/etc.