This is in contrast to Facebook or Twitter. Those platforms will absolutely take down content that is offensive or criminal in nature.
This is not even remotely true. I have reported content many times and when I come back to check it, it's gone. This includes account of spammers, some sellers (or pretending to be) of illegal goods, etc.
The have moderation teams because they are required by law. These are outsourced to the lowest bidder. They are so overwhelmed by the amount of that content.
Watch those documentaries about the psychological traumas inflicted to those that moderate Facebook content.
The political establishment doesn't want the proletariat having journalism that reports against the wishes of the powerful or of regular people having free speech to be used against the government.
No ethical person should take part in enforcing these laws.
> Reporting a channel
> Open Telegram > Open channel > Select channel name (top) > Report > Select the report reason
> If you need to report content by email
> Address it to abuse@telegram.org with a subject like “Report user @username”
In desktop app you can simply click right button on the message or click three-dots menu in the top bar and there will be an option for report.