During the bull times people spend billions together to buy bitcoin and another billions for those altcoins, that means the price goes up super high, but during bear nobody wants to be the first ones to do it, if some people are convinced that it will go up, then it could light the fire and we could be 45k by the end of the year.
Bitcoin and all others can't be totaled into just "crypto" and be considered the same thing, shiba and bitcoin is not the same, floki and bitcoin is not, there are thousands of things that is not similar. I feel like ETH is trying to take that spot, but nobody else is even getting close to bitcoin these days and doubt would ever do.