That's the thing - ignoring made up taint is the default position. All you have to do to ignore taint is set up bitcoin wallet and give your address to customers. Let's encourage more of that.

BitPay does a whole lot of shady stuff, including demanding KYC not just from merchants who use it but also the customers who shop at those merchants via BitPay, and freezing any payments they don't like. I find that they are predominantly used by businesses who are quite happy to comply with taint nonsense, and so are quite happy for BitPay to demand KYC from all their customers and do all their dirty work for them.

Note there is a difference between the BitPay payment processor and the BitPay wallet, but given how utterly horrendous the former is I would never touch the latter (or indeed anything from the same company).