Bitcoin Volume: is it really going down?

It's been a few posts already that I have seen mentioning about Bitcoin Volume not being enough for that expected bull run, but I'm not sure it's really that low.

Here I have just a couple of examples to show the difference in volume, depending on the exchange we're looking at:

Bitfinex:

Here we see that being bitfinex one of the biggest exchanges around for BTC/USD pair, its volume is not that big lately.
But take a look at the next one:

Bitmex:

Here we see how the volume is going up lately, even compared with the all time highs of last December!

So... is the volume really a problem here?

Cheers,