I really like bitcoins ux, it's really simple to take out your phone and scan a qr code. I've also made a large number of transactions and have never had one fail (some can take a while to get confirmed but every merchant I've used credits you as soon as they get the broadcast, not when it's actually confirmed.

This is my feeling exactly! Bitcoin ux (especially for online only stuff that doesn't actually need an address) is actually way nicer than typing in my credit card.

This last time I tried to buy something with my credit card I accidentally mistyped the code on the back and they disabled it until I called the card issuer and gave them my SSN!

"Poor UX"?

"Scan QR code, press Accept" is poor UX? You should see Visa's 3D secure, the thing that just makes me close the browser window whenever I see it, because it means I'm never getting the payment through.

I would guess, just having it as an option in addition to credit cards, wouldn't make someone abandon their cart in the case of a poor UX (more likely abandon bitcoin)

The various tipping services on reddit and other message boards that enable bots are anything but poor UX. Nothing else can come close to enable that kind of instant tipping.