Luminance, I am trying again to have a real discussion without it becoming decisive/derisory (?) or point-scoring.
The example you use is reminiscent of a previous poster who seemed to 'know' a huge number of transpeople yet also claimed that problems only existed for a minority. That can't work in reality. Either one person comes across enough transpeople to be able to generalise based on that sample, or they/we don't know enough to be able to have an opinion. Both can't be true.
Any of us can claim to be anything on here - I could say I am an eminent psychologist, or a teaching assistant, or a geneticist, for instance, and who would know otherwise? We really can't do more than speak theoretically, as I could claim to have friends who do XYZ, or to meet clients/patients/students on a daily basis who do ABC, and who could argue against that?
We have had posters on here who seemed to preface every post with anecdotes about 'my trans friends' or 'all my Lesbian friends'/ 'my young feminist friends' as if that proved anything or made them seem more 'in touch' than everyone else on GN.
Similarly, we've had people claiming that their 'training' gave them more insight than others' personal experience, and that proved nothing either, given that the training was relatively low-level and provided by Stonewall.
All we can reasonably do is talk in theoretical terms and maybe flag up an occasional example from experience that shows theory to be inadequate in a particular case. Anecdotes in general are not enough to prove anything though, however important they are to those living through the circumstances that they describe.
A propos of nothing relevant to this thread, however, I would like to offer an apology to Germaine Greer (not that she'll care either way) as she was one of the few women to sniff out the reality of this whole shebang years ago - way before I managed to get there. Embarrassingly, I thought that she was out of touch, and can't tell you all how bad I feel about that now. Luckily for both GG and me, she wouldn't be able to spot me in a crowd, whilst I am in awe of her intelligence. Sorry, Germaine.