If you buy something with cash and it turns out to be defective or it is never delivered, are you left with no recourse?
"But online shopping could mean someone from some other part of the world!" yeah, then don't buy with crypto.
> All non-reversible transactions do is put the risk of fraud on the consumer.
"And for everything else, there is Mastercard..."
Yes, the risk goes to the customer. But the point here is that crypto can enable a whole lot of other businesses that don't exist today because of merchant risk.
Patreon "exists", but as TFA shows is stupidly expensive. I have a SaaS that I'd like to charge $0,50/per month. I can not do that because Stripe would eat 80% of it in fees. The minimum payment amount is $5, but from that Stripe still gets 9%!
If crypto payments were normalized (and if scaling solutions get more adopted to reduce tx fees), customers would think "well, if fifty-cent service is a scammer, it will be on reddit already. If it is not, then it is only fifty cents and I can get a lot of karma for it"