I didn't very much follow the whole Coinbase IPO thing, but I guess not, so many people would want to buy stocks that are just dropping nonstop. People want to make profits, and this includes even those founders.
Well, I wouldn't say that Coinbase stock price is dropping non stop, but more that is following the crypto market which makes sense as their profit depends on the amount of people trading there. Chances are that once we enter bull market again their stock price will start rising again so yeah, I wouldn't be surprised if their founders are buying the dip.
Regarding the title of this thread, I am not so sure that we can say Coinbase has financial problems just because they ended one quarter in negative as probably every other exchange experienced the same thing in the last quarter, its just that others are not publicly traded so we have no idea what's going on there. One positive thing I can see from this though is that some people will get scared and maybe start realizing that their money stored at Coinbase is not as safe as they think it is.