Meta and Amazon are businesses that depend on developing technology (so are true tech companies as much as NVIDIA or Apple) but nowadays “tech” merely means at best “online”. Most so-called “tech” companies don’t actually develop any technology at all, often being less technical than a non-“tech” company like, say, State Farm.
The term has become so denatured that a new term, “deep tech” has been coined to mean what “technology company” used to mean.