Yes, and telephone operators are required to give law enforcement enough access in order to track down people who do crimes over the telephone.
Telegram does not do that, and does not shut down the illegal behavior. The problem isn't that illegal stuff happens on Telegram, the problem is that Telegram won't help law enforcement when that illegal behavior is found.
> are required to give law enforcement enough access in order to track down people who do crimes over the telephone.
They are not; however, required to prevent certain people on a prescribed government list or criteria from owning or using a telephone or from dialing certain numbers.
> won't help law enforcement
So it's not because a "channel is against the law."
Telegram does not do that, and does not shut down the illegal behavior. The problem isn't that illegal stuff happens on Telegram, the problem is that Telegram won't help law enforcement when that illegal behavior is found.