In the dot-com situation earnings "didn't matter" as long as there was growth. We[1] all believed profit would come eventually. The lesson learned from that experience was that earning do sort of matter. It turns out there is a limit to selling dollars for dimes. Since then revenue, profit and unit-economics ("fundamentals") have gotten almost as much attention as they deserve.

[1] a broad and poorly defined group of "we" - typically investors and tech-bro types.