> I wonder if some of the gender and queer issues in kids these days are actually because of this issue, same with other pathologies that sometimes require medication like ADHD/Autism.

Uh, transgender people were scientifically known since at least the late 19th century [1]. The problem is that the Nazis eradicated all the knowledge during their reign [2], and that the Catholic Church was actively fighting against LGBT people for a very long time, even before that era (and modern-day Evangelicals in the US have taken on their mission).

What has changed in "gender and queer issues" is that this negative influence has disappeared as the public importance of the Catholic Church has waned over the last decades and that protections for LGBT people got affirmed by courts, constitutions and laws.

As for ADHD/autism: these were also known to science at least in the mid 19th century [3]. However, for a very long time the issues were not as apparent or problematic in society as they are today, mostly because most of society was working in the agricultural sector with lot less work load than modern-day turbo-capitalism requires [4].

[1] https://en.wikipedia.org/wiki/Scientific-Humanitarian_Commit...

[2] https://en.wikipedia.org/wiki/Institut_f%C3%BCr_Sexualwissen...

[3] https://en.wikipedia.org/wiki/Struwwelpeter

[4] https://groups.csail.mit.edu/mac/users/rauch/worktime/hours_...