Its already less volatile than it was. See random screen grab of 5 weeks from 2013 vs 5 weeks from 2024.
Increases in trading volume (and the sophistication of those traders), will lead to further and further declines in volatility.
Most professional traders utilize balanced portfolios (eg. simple example of 90% BTC / 10% Fiat). Such trading structures automatically lead to less volatility since gains are constantly sold and likewise dips are bought during the monthly rebalancing.
This is simply not true. Bitcoin was rock solid in 2018 for almost the complete year, and then all of a sudden it fell by 50% on 2019:
This will be the reality of bitcoin forever as long as it remains being a liquidable asset and not a currency. That's specially true in your last argument: "since gains are constantly sold and likewise dips are bought" implies that fiat backs bitcoin, thus bitcoin will remain an asset and never can be adopted massively as a currency. By "massively" I mean the user-base and the volume (of bitcoin, not of USD).