@Schaf
> What were the reasons why people complained?

It is mostly a cultural thing. Mastodon users and admins have always been against such a service, various sources can be found on that topic, including mastodon's GitHub.
The backlash mostly came from admins, some of them sending insults and dead threat, both to us and our instance admin.

@Schaf
> What were the reasons why people complained?

Our instance admin backed down and kicked us from their instance ( infosec.exchange ) based on the threat of being excluded from the Mastodon fediverse, a risk they couldn't take.
We understand the decision and stand by them, we are however really disappointed with the behavior of the other admins who were responsible for protecting, or at least informing their users.

@Schaf

The biggest fear on the user's side was for the service to be used by trolls to shame them on their sexual orientation and kinks.

In the end we're not here to fight but to provide users with a service some found helpful on spare resources we had at our disposal.

We took the trolling point as valid one which pushed us to back down, everybody needs to "feel" safe somewhere.