you hate the company or the product? How does someone hate a company the open sourced all of their patents which resulted in creating a ton of competition in a previously dominated market?
Some people don't ignore the fraud, the terrible working conditions, the anti-competitive business practices, the unfulfilled promises, the stock price manipulation, and the cult of personality of a highly controversial leader just because of a marketing stunt from more than a decade ago which even Elon admits was not altruistic.
I'm a fan of Tesla's patent strategy. However, calling it "open source" isn't strictly correct. Patents are only free to use as long as you also give Tesla rights to all your patents.
copy-left is referred to as open source and some even claim it's _more_ open source, but thanks for the information, I wasn't aware of the that detail.
edit: oh it's not copyleft, but specifically quid pro quo so tesla gives you their patents if you give them yours
A copy left style arrangement would require you to not enforce your patents against anyone who signs and upholds the agreement, not just with Tesla. If that was the case, I probably wouldn't have quibbled with the term "open source" being applied.