Wow, that's interesting to read. I honestly think that altcoin is better since the fee usually cheaper. But, looks like someone still want to use btc as payment method.
A Gift card shop that i knew removed it btc payment because the same answer as number 7 and 10. I remember back then, the fees can reach $20 per transaction.
“Yes I use Binance Pay...”
Looks like this fixed the problem for confirmation time(tried to google it and it said the transfer should be instant). Back then, the confirmation sometime take too long to get confirmed.
Well, if it's internal transaction then it should be fast enough to receive the funds but if it's from another then you will have to wait for the transaction to get confirmed unless you want to use usdt to pay. It also depends on the seller if he wants to receive crypto payment other than bitcoin and usdt like eth and other crypto only have small transaction fee. It is only possible if crypto isn't banned in a country.