I am a small business owner and plan to accept bitcoins as payment. Recently, I just learned that some exchanges may not accept bitcoins from certain wallets that they are considered tainted or coin joined bitcoins ? I tried researching more on this and came across this very good [article](https://cipherblade.com/blog/tainted-bitcoin-isnt-what-you-think-it-is/) — essentially it say I shouldn’t be worried about tainted bitcoins?
However, knowing that some exchanges like Coinbase may flag and report you if you send bitcoins that they considered tainted to the exchange. My question is how do i make sure that I will be able to sell bitcoins (i don’t really plan to though) I am receiving from my clients to places like Coinbase? Should I be worried about this? (i.e. what if a customer try to send coins from [this wallet?](https://twitter.com/whale_alert/status/1382386472419012611?s=21) )