Bitcoins volatility doesnt scare me anymore as I prefer to accept stable coins as payments. Its a good option to hedge from crypto volatility.
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.
Those business owners will most likely convert it into their own fiat currency when they need to buy supplies for their business. We have seen a lot of threads here in the forum where people are already accepting bitcoin in their businesses, and they usually convert it immediately as they also need it to be fiat, but there are also others who want to hold it and keep it for future purposes or use it as a savings.
I don't have a business, but I am happy to see other businesses accept bitcoin as their payment method because it can raise awareness among other people, and for others that have an online business, it would be easy to receive payment (easy to set up compared to the usual method that needs documents).