I'm not sure how extensive this problem is, but it doesn't surprise me in the least if exchanges are faking their trading volume.  They probably do this to make themselves seem like a hotter exchange than they really are--I can't think of any other reason for it.  If their trading volume looks dead, customers might start looking for another exchange.  And one really bad thing is that if volume is actually close to zero on a given coin, any new sell orders probably won't ever get filled, though that's only probably true for the deadest of shitcoins.

As I've said before, as long as the prices aren't faked I could put up with using an exchange that fakes trading volume--but only to a certain extent.  They shouldn't be doing this at all, and it's extremely dishonest.  Imagine if a stock brokerage was caught doing something like this.  They'd probably be put out of business within a week, if not fined to the maximum extent of the law.  They'd never get away with it.

Oh yeah, the crypto cap has tripled.  Not surprising, since the shitcoin parade keeps going.  More coins=greater total marketcap.  That's not a piece of data that I particularly care about.