Bitcoin is a currency that can be used for payment of goods and services. Very simple. And the process of regular transactions of bitcoin has it no negative effect because it's rightfully what it's meant for.
But I'm trying to pick a point of what you meant which is about investors holding and accumulating without selling so quick that's to bring about market increase.
I also understood the act of Fomo on users who accepts bitcoin for payments may loose the value of accepted payments on bitcoin due to the fact that it's volatile. That's really true, some users that accepts bitcoin as that are usually traded their bitcoin to fiats with that Fomo act. This is one real why the digital technology has also got the USDT as a stable coin which means such users can convert their bitcoins to USDT where it won't be volatile but be aware that it can be affected by the global economy system.