Bitcoin maintaining their popularity by their own performance in crypto market. Bitcoiners are the main asset of bitcoins because they always stay with bitcoin by holding bitcoin without selling it. The credit of maintaining bitcoin popularity is only for the bitcoiners.
It is not that maintenance but increasing the value by having some investors, and before this year ends it will increase more, so just stay tuned with what bitcoin will be worth this year. For sure a lot of people will race again just for them to buy bitcoin and hold in their wallet.