Happened to me with telegram. Reported a scammer in relevant tg channels, next thing I know , several users reported me, and telegram blocked me for spam.
Yup. I got some dkim-signed scam mails ("you have won an X" and "missing package details" scams) from a Danish domain, I figured that Denmark was civilized enough that it was worth it to try their domain provider's abuse reporting. Nope, I got an explosion of spam after that, including some that looked like sign ups for genuine newsletters (as much as anything without double opt in can be considered legitimate). Looks an awful lot like the domain registrar decided to punish me with more spam for trying to get their scammer buddy kicked off.
It's pretty common for e.g. hosting providers that don't take spam seriously to just forward complaints to their spamming customer. Exactly the opposite of what they should do, and you've seen the result, but some companies just don't care.
That's also what Apple does when you report an app on the app store for infringing on your rights. They just forward your complaint to the developer, and tell you to deal with it.
Telegram is the worst in terms of spam. I joined some public group chats related to my city and in the middle of the night those channels get spammed with Islamic State recruitment videos.
yeah that one person who uses that one thing that you don’t support, prudent to call them out for not personally fixing the world. You have made a big, big difference today bud.