Given the readership statistics presented and, as pointed out, the high cost in terms of time and effort - in an undertaking clearly devoid of benefits - it would appear that writers of Gay literature are the largest collection of masochists ever gathered together in one domain.
Add to that the costs of non-constructive criticism, fear of rejection, domain "experts", and occasional outright abuse from a variety of sources, it's amazing that any of us bother.
To further support that scenario, another GA statistic derived in full from the Authors listing indicates that of the 1026 authors with listed stories, 423 wrote only one story, and less than half wrote more than two. So, obviously, it's a dismal environment where only a few self-flagellating fools persist.
However, the apparent assumption that unattainable fame and fortune are the only benefits to be pursued is fortunately in error, as the other half have learned. For most of us, this isn't a day job, but a hobby that reaps rewards such as friendship, knowledge, self-improvement, global understanding, and self-directed therapy in an environment where the members provide each other with support.
It took me several years to figure all that out. I hope you get there sooner.