sending BTC to a stranger on Telegram is not a good one because so much risks are involved and scammers can have field days.
the risk is much and its like leaving your wide open and travelling for a year.
Yes, that's true.
I also checked the OP’s channel. It seems they in the process of creating a website instead of conducting deals through Telegram. Even if they succeed in launching a website, there is no guarantees that users will be able to legitimately exchange their assets.
New websites and strangers should be avoided, and one should always consider using popular, reputable, centralized and decentralized exchanges.