Note that the dot-com bubble lost about $1.7T [edited from B] in market cap, off a total of roughly $3T for the sector:
https://money.cnn.com/2000/11/09/technology/overview/
In the grand scheme of things crypto is still relatively small, another dot-com bubble or not even that. It's going to be a sideshow for the bloodbath that happens in the public equity and corporate debt markets (and eventually, the housing market), which is just getting started.