It has a lot to do with crypto for payments if the vendor has to deal with massive swings in value over very short time frames. The solution that most vendors wind up with is getting their crypto exchanged for not-crypto ASAP, which is useful solution but not much of an endorsement for having accepted crypto in the first place.
When I am talking about payments with "crypto" it also includes stabletokens, which don't have this problem.
(And no, not all stabletokens are created the same. Tether is poison and everyone should stay away from it. The "algorithmic" stabletokens are already provably not viable. But DAI has managed to survive even worst market crashes than the current one, and USDC still has some semblance of trustworthiness.)
DAI can only crash "for good" if Ethereum crashes for good. MakerDAO is not over-leveraging itself to mint DAI into the market. MakerDAO does not pay any type of dividends to the people putting their crypto into the system - the opposite, actually.
