The Cybertruck specifically, or Tesla in general?
I will happily admit that Tesla helped demonstrate that there is a viable market for EVs, which pressured other auto-makers to produce them. The auto industry has become very risk-averse over the last several decades, so convincing them that EVs weren't a risky R&D investment was a big step.
The Cybertruck has been a phenomenal failure. Sales have been far below what Tesla projected, for a number of reasons. Not least of which is that, in the time between their original announcement and actually getting the thing to market, other parties released EV pickups with much more conventional designs and, more importantly, better value.