Telegram itself is just a piece of software. Telegram’s community is wide and varied. Does it need moderation? Yeah probably. Who should be doing the moderating, not just of individual channels but of all the channels? Eh, I don’t have a good answer to that.

As long as you agree it should be happening, I appreciate that. I think Telegram should probably worry about it, and keep looking for solutions, but also that people should report the problematic groups and channels they come across, and be aware of the issue just to put a little more PR pressure on them to come up with a solution.