@God Of Thunder, considering the work you do, wouldn't it be logical to try to switch your communications to another app? I won't name any, but there are several that are far better and more private than Telegram.
I think leaving telegram can be really difficult for campaign managers, it is like the most common way to reach out to client/potential clients and workers. I think majority of the CM here managers uses it, and this means they are very much aware of the risks that comes with it.
Even reputable users having telegram username known faces danger of this from scammers and now being a CM, scammers interest would be more just find ways of limiting/avoiding this. Telegram is still the den for scammers.