Bitcoin price is also not stable.
All these factors affect its popularity ??
What you think, still bitcoin is more popular ?
how can you erase bitcoin popularity if all or most of the cryptocurrencies are depending on bitcoin? most if not all exchanges are trading alternative coins with bitcoin. most of the buy walls are consist of bitcoin, every "most" token is depending on bitcoin trade and their dollar value also depend on bitcoin to usd value. bitcoin is anywhere.
bitcoin is like a mall where it consists of department stores and boutiques, they will all be gone but bitcoin will stand last as it is the main building.