Only with a business explicitly declaring in ToS (or wherever) Bitcoin as fungible am I willing to include it on a whitelist.
But i expect it'll difficult for most business owner to do that explicitly due to various regulation/law. I only expect anonymous group or service which focus on user privacy to do that.
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).
Take note BitPay wallet is open source[1], where few people automatically assume it has to be good/secure/trusted. But i'd like to let people know WalletScrunity failed to compile the wallet from source code[2]. Someone even offer USDT for people who can give detailed build guide under Windows[3].
[1]
https://github.com/bitpay/wallet[2]
https://walletscrutiny.com/android/com.bitpay.wallet/[3]
https://github.com/bitpay/wallet/issues/12046