If @LisaLittman1 wanted to add trans people to her study as a comparison to her detrans/desisters, she'd have no need to limit herself to people whos identities had been stable for only 6 months.
She could easily find trans people who'd had stable identities for many years.https://twitter.com/e_urq/status/1262794057132081158 …
I bet with the same amount of outreach you could find as many trans people whose identities had been stable for 10 yrs as detransitioners/desisters who'd been stable for 6 months.