Maybe next time, try saying "It doesn't do what I personally need a truck for" rather than "It's not really a truck" if you think it fits the definition of a truck but doesn't do what you personally need a truck for.
You know what? I think I kind of agree with you. At least the cybertruck is a stupid vehicle which I'd be comfortable saying pretends to be a truck without doing any of the things a person who needs a truck needs their truck to do.
I think gating the definition of "truck" behind "not electric" is stupid, which is what I thought you were doing (and to be honest, your comment is worded to make that a reasonable interpretation); but if you just meant "these trucks are stupid and don't do what I need a truck to do" then I can't disagree.