Talking to avoid scam telegram groups, but you offered anyone to join your groups since you claimed it's legit group.
Yes, we should avoid all groups including you.
Some telegram groups have awesome content that can be useful for trading while other groups have specific coin to shill time to time. Joining or not depends on personal achievement of trader since the group gonna be managed by trader like us. Scam social media accounts can be bad for inexperienced traders who blindly follow trading advices which same as shilling useless small marketcap altcoins.