Well, all we can do is speak in generalities. Dating is a sort of specific one-on-one thing, and those generalities don't really apply.
In general, older ciswomen don't care to date older transwomen, whether pre or post op. I have quite a few friends in the lesbian community, and some even accept me as a lesbian. None would date me, as far as I can tell. I'm thoroughly in the 'friend zone'.
In going to meetups in the area, I have found the Berkeley (California) and some other lesbian meetup groups to be the least accepting. One 'trans friendly' group was really 'trans man' friendly, and decidedly a 'womyn-born-womyn' sort of group. Others welcomed me, and informed me up front that there were only a few trans women in the group, so my dating pool would be limited. Yes, 'trans should only date trans' is a thing with the older lesbian community.
Younger lesbian/queer communities and meetup groups are much more accepting. For the under-40 folks, there is much more acceptance of trans women as reasonable dating partners in general.
For online dating, well, I got zero real connections that way. I did get some stuff from men posing as lesbian women (yes, this is an online 'thing'), and a couple pieces of hate mail. As an older trans woman, I found the online scene didn't work for me.
I'm currently seeing a very nice woman my age that I met through a message board and a personal visit, and we get along well. After several visits, I'm quite happy with how this relationship is working out so far. 🙂