I did not say stable. I said decently stable. Since Monero is actually used as money and changes hands often, the price fluctuations do exist, but they are less than they might otherwise be. Monero took a big shock recently during the Binance de-listing and dropped 30% which lasted for all of about a week before it was back to a decent equilibrium and only a month to recover most of that loss. It has recovered 20% of the original drop, even though there are fewer people using it. Because it removed some speculation from the market. More people over time are realizing that Bitcoin is not the promise they understood it to be and are leaving for Monero.