Their cash flow doesn't seem to be a problem. It's a speculative attack on the dollar in an effort to acquire the most scarce asset to ever exist which just makes his company more valuable... which is ultimately good for investors, no?

I mean, I would never recommend buying any stock over bitcoin, but has the price performance of his stock suffered, or are people buying it because he is outperforming the rest of the market?

Leverage the investors is good for them? I don't think so, he should at least be actually building something on the bitcoin protocol imo.