Yes but that mostly includes those who've attached themselves to fashionable identity groups, and not just the much, much smaller number of those medically diagnosed, the latter of whom aren't just following a trend.
Nonsense. People are born to use only two kinds of programming languages: either those which everyone complains about, or those which no one else uses. Never the twain shall meet.
1300 is a nice sample size if you're sampling randomly.
If 1/3 of people have a trait, you'll get a good sense it's common after asking 300 people, even if the total population is a million. Surveying more gives diminishing returns as the result quickly converges on the real proportion.
The real problem with all surveys is the sampling isn't truly random, which skews results.
While it is finding humor in a horrible situation, a Rust joke is not attacking race, creed, gender, etc as is so common from the internet dregs.
Edit: the above has now been edited to note slurs which was not previously present. At the time the quoted joke was only “Rust devs did it”