Earlier quoted context omitted.
Thankfully I've had better chargeback experiences with EU banks. I've only requested chargebacks on products I've not received, and provided my attempts to communicate with the seller. Always got my money back, but was blocked from buying from that merchant again (not that I'd try it after the bad experience).
I have had good chargeback experiences as well in the cases you name. I am talking about cases where it is clear where you are frauding the merchant which are still easy in the US. 3dsecure in most cases means you have to have coerced me AND have stolen my phone/token device. How would this warrant chargeback unless actually you did not receive your product and there is a clear trace of that. In this case indeed, you…
And of course, SMS 2FA is not secure at all. Now if there's fraud and the scammer used 3dsecure with spoofed SMS, good luck convinging the bank it wasn't you.
"But SMS is not the only option" you say, "other banks have better 2FA", actually, I use other banks too. And they have something insane for 2FA: https://lobste.rs/s/1cyltz/two_factor_authentication_now_ava....