By 65 million in liquidity, I presume you mean the same ~1000 BTC that has always been on the network, for 2 years now. There has been a slight uptick, in the last 6 months, but the amount of BTC on the network has stayed basically the same.

I don't really consider "People put 1k bitcoin on the network, 2 years ago, and then never removed it" to be a good example of usage.

What matters is usage. How many people are actually using it in actual transactions. Not some nebulous misdirection to a concept of "liquidity".

According to a fairly reliable source [1] it's actually $320 million (on the network + sidechains).

[1] https://twitter.com/DocumentingBTC/status/139252761698122957...