How would total supply influence things when we’re running away from it (we are expanding it).
Exchanges can allow you to have ‘virtually unlimited’ currency (being it crypto or whatever).

My point is one can now trade cryptocurrencies on platforms that don’t really have any in their vaults. - that’s really hard to digest.

Bitcoin platform is only allowing 4.6 transactions per second and combining all trading platforms at this very moment I would bet hundreds or even thousands are being done.
So again.. do we even care of the limitations of a coin, or we have found a way of unlocking our way towards infinity?

Whatever assets we are using, we just want to squeeze value out of them, and fortunately enough there are a lot of thing that we can change assets into so no matter what we can bring the value closer to our hands.