I'm assuming by "upvotes" you're referring to positive reactions to the design as opposed to the HN voting buttons.
The design, of course, is subjective. We'll be seeing professional commentary which may sway our opinion. I would be interested to see if there were design constraints which weighed heavily in the final design.
There's a prism of ugly and this truck fits in the region which I can live with. I have mostly found Ford designs to be ugly (1995 for example.) I also feel that truck designs have mostly been similar. If I find X year Ford to be ugly, then it's relative to the same year of Chevy. There's also utility ugly and the sort of ugly which attempts to be artistic but which fails into something I would be embarrassed to drive (curves and paint schemes which aren't meant to be functional and just look bad.)
The Tesla Cybertruck has the feel of minimalist utility. It's also bold and different. Unlike the Rivian, it's not trying to be anything like the current state of the art of trucks. I think it will have a lot of appeal for being different and for having crazy specs. It's ugly, but I want one.
I have been seeing good comments pointing out problems. For example, it doesn't seem to be accommodating to accessories. Maybe this is something which will get worked out before it hits production.
History will judge this thing better than we can. Regardless of our opinion, it will be interesting to see if the design sticks.