The market overreacted and, at peak, we got ~1/3 of the marketcap wiped out. You can't have a 60mn theft taking billions of the marketcap - it's irrational.
I don't believe market cap is a rational way to get the measure of anything, especially something as thinly traded as Bitcoin, let alone alts.
What do you use to measure then? Market cap is better than unit value, in my opinion, but it is also a very incomplete measurement, I would agree with that.. for example, measuring various aspects of development and fundamentals like security through hashing power and ways in which the asset contributes and has the potential to contribute.