So you are saying that if you don't convert to fiat, you don't have to pay any capital gains tax.

Could you provide some links which support this claim?

I highly doubt that there is a giant loophole which allows you to trade your bitcoin acquired at $1 each for some goods at the current exchange rate of $1k+ without paying capital gains on those bitcoins.

That's like saying if I bought gold at $250, I can go exchange it for a new car today at $1200 plus without worrying about capital gains on the gold. I just need to find a car dealership which will accept gold. I don't think that's how it works.