First before you read the rest of my response, could you put a meta tag in your post title? Just to keep things organized.
I do think that looking for for sexual interactions is against the spirit of this community. I am going to add that as a new rule and enforce it from here on out as a new standard rule. Looking for friends is okay, looking to meet people is okay, but that specifically is, I agree, something that puts vulnerable people at risk.
As for the comments about online relationships. This community is first and foremost a supportive community for transfeminine people. That necessarily entails that people can come here and talk about the things going on in their lives without an expectation that they will be met with gatekeeping and judgement. I dont want to foster an atmosphere whereby people feel like if they post here about something they are likely to met with a lot of unsolicited advice and caution towards their lives.
If someone were to ask "what do you think about my online relationship with this person I met on a kink discord" then I think its appropriate and acceptable for people to express concern. But if that hasnt been requested, if they didnt ask for advice, then I wouldn't really want or expect the community to collectively throw a lot of caution or concern their way. The end result of that in my mind is more likely that the poster will just feel alienated from this space and unsupported here.
Case by case my vary, but depending on the tone of the comments I would be concerned about someone creating an environment of hostility towards other users here. A degree of caution is always warranted when engaging in online relationships. It is also true that many people who are in an online niche queer community like this are themselves in online relationships. I do think it is important that this space exist for them too.