I think you lack of evidence I just check the address https://bscscan.com/address/0x7ca11ddf9659b433fe81beb3cf8240dd8f314842#tokentxns
You need proof that above user has an address on the chain that already write on this forum.

Maybe they are some group of friend working together?

That is actually the Binance address for a user and Usually, binance transferred to their Hot Wallet