This is false for at least World of Warcraft. Everyone who has every done any random group content can attest to the fact that it is always hardest to find a good tank.
I think tank in most MMOs is a low-desire role. It typically hinges entirely on having a healer to keep you tanking, as well as holding an immense responsibility to be aware of aggro patterns and incoming debuffs. You eat a lot of blame for not tanking well, even if it's just because your healers mispositioned or some DPS decided to steal aggro by spamming too much of X move.
And generally, you don't feel as much of the "I did a thing!" feeling as, say, a rogue pumping out damage or a mage casting a slew of debuffs and DoTs.
When I was younger, I always played a tank, and yea the blame was always high, raid goes good, it was DPS got the good job, raid goes bad, fucking tanks fault.
First you got to have the existential crisis of figuring out what system you are playing. You can't just assume D&D. Once you get that out of the way save room on your schedule for a smaller crisis about which edition you are dealing with...
IIRC, this is basically what happens, in a way. Our scent makes us more attractive to people with different sets of immonorelevant genes, so that our offspring has a wider array of defenses.
My local stadium hires a security company called DPS. I stopped one of them and said "y'all's comp is unbalanced, try sprinkling in some mages and tanks" and he had no idea what I was talking about.
Bystander laughed though so it wasn't wasted time.
Oh no, it's definitely a thing. I've been polyamorous for 10 years, and I can count on one hand the number of polyam people in my circles who aren't into either D&D or board games.