Also I learnt that linked wallet addresses are also used to detect cheaters, and yet the wallet addresses are visible to users. What happens if someone wants to destroy your account and decides to send some coin to the wallet in order to link it.
I am just trying to think aloud.
Receiving bitcoins from a address does not infer a relationship between two addresses, there could be so many reasons why s won would want to send you funds.
One problematic situation I can see is someone registering for a campaign using your details, address or social media profiles, which is many times used as proof of connection, this would be a sticky situation to get out of.