The Model Y has a very conventional style, so the fact that it sells well would seem to be a point in favor of the GP’s argument. It also sells in many continents, which Cybertruck might not be able to do.
Cybertruck doesn't have to sell well, it just has to have greater demand than supply globally. Global pickup truck market is ~4M/units annually, so Tesla should do just fine carving out some of that for itself.
[1] https://cleantechnica.com/2023/01/03/tesla-sales-up-40-to-re...
[2] https://electrek.co/2023/02/27/tesla-dominates-brand-loyalty...
Also, trucks are functional vehicles, and Cybertruck violates a lot of common functionality that most “legacy” trucks have. There are probably a lot of people who drive trucks who don’t need that functionality—i.e. poseurs—and maybe some of them will buy Cybertrucks.
https://www.thedrive.com/news/26907/you-dont-need-a-full-siz...
I own a Model 3 and was considering a BMW 3-series (non-EV) briefly before I bought the Tesla. While shopping I was surprised to notice how closely the price of Model 3 option packages tracked the BMW equivalent packages, almost within a few dollars (although the Tesla had fewer packages.) It seemed obvious to me that Tesla had done this on purpose, in an effort to carefully market the Model 3 towards an existing successful market. Similarly, the crossover they came out with next was named the “Model Y” and seemed almost perfectly tuned to compete with some of BMW’s popular X-line of crossover SUVs, again an existing market that could easily be optimized against. So while I would not use the word “copy”: it sure seemed like Tesla was carefully targeting existing markets, with slightly more flashy vehicles and similar price points — all with enormous success! The Cybertruck, on the other hand, throws this successful and cautious strategy into the garbage and then backs over it.
That cuts the other direction as well, if Tesla/Musk just alienate 90% of the population and the backlash builds against their touchscreens and build quality then they may find that they're just selling to fanbois.
And the EV Ranger is the vehicle that is targeting the kids of the people who presently drive F150s.
A car/truck purchase is emotional, and if you live in Astoria, OR a cybertruck is going to get you a ton of shit from everyone you know.
The successful Tesla models have had styling that pretty much looked like any other vehicle and didn't stand out a lot and any cachet was based around what it was and how it performed.