When I was 35/36 I dated a 46 yr old man, he didn't do old himself (biggest technophobe I think I've encountered) but his acquaintances (around his age and older) did and what he relayed about their attitude to old, what they would say about old etc was very notable .... And possibly explains many women's experiences.
Basically they saw old as some kind of playground, as somewhere to find sex, as something almost not "real". The women using it were thought to be up for it & promiscuous or desperate (otherwise , in their view, why would they not just have met a man "naturally" in their area; after all men are (in their eyes) always on the look out and women have no trouble meeting men for dating and especially sex.
Because it was online, not "real", and often the women were some distance away; they seemed to feel they didn't owe the women the level of consideration they might if they knew them locally. Likewise their bad behaviour wouldn't t be likely to get back to people locally and their reputation wouldn't be affected. They could drop/block and wouldn't have to account for it.
Some saw the distance as an opportunity to cheat if they were partnered up. Not likely to get seen and caught like they would if they did it on their doorstep.
They projected their sex seeking onto women .... Even though most women probably weren't looking for sex.
When I did old briefly myself, I also suspected numerous men were attached and looking for bits on the side.