Because the 10-bagger part already happened, it makes this stock even more dangerous for some shorts. After seeing the first 10 fold, they think it's safe to stay short, tend to become "short and hold", "short more when the stock rallies."
Seems to me the next 20 fold is about to start within a few months. However many shorts are so sure the upside is limited. They keep thinking "GM sells more car in a week than Tesla in a year; EV is just a niche market; the competition from big boys is coming around the conner; Tesla loses money selling $100,000 cars, it will lose more money selling $40,000 cars."
In reality, I think the bad case scenario for Tesla is to sell the company to Google. Down side is limited. But there is a very high chance the company starts to make money from the Tesla network division. It's like Uber but with distinct advantage against any other ride sharing or taxi companies. This division could generate $4B profit the first year the service starts. When that happens, suddenly the master plan part 2 seems real. Tesla doesn't need to raise cash anymore, instead they will start to buy back shares.
In the past few years, Tesla's stock has been range bound. Shorts view that as a good sign for their position. I think what happened is the weak longs got washed out. The underlying business progressed tremendously. More and more long holders understand what's likely to happen to Tesla's stock. Remember the T. Rowe Price manger said "I love everything about Tesla......"? Shorts helped to depress TSLA's price, while bulls slowly increased their holdings.
It's not a good situation for shorts if they understand what's going on.