Indeed, in the end many people will think that coinstable is the best option to adopt as a mean of payment in an effort to avoid volatility. I don't think that's a problem because many adopters will also be more likely to convert to stablecoin or fiat, meaning they don't hold those bitcoins as a long-term investment.

After all if these adopters want to invest then of course they can use those stablecoin to buy bitcoins. I know some people will accept bitcoin and hold them long term, but others will convert them as quickly as possible to avoid volatility. Both ways are not a problem for me, it depends on the wishes of each adopter.