hi, in my opinion if it wasn't limited to 21m, then we won't seen the price of it even grow. just like a Fiat currency that if a government keep printing them the price of it falls and there will be stagflation in the country.
Bitcoin is in its very early stage and for that reason the limited supply isn't the most important aspect of buying it. Ethereum has no limited supply, yet it kept going up hard because the demand greatly exceeded the supply.
With how crypto in general grows, and as long as the rate of inflation isn't an exorbitant percentage, the increasing demand will always outperform the rate of inflation, and I don't see this end in the coming 10 or so years.
Eventually it will matter, but for now it really doesn't. Bitcoin is a tiny drop in an ocean of capital that need a regulatory framework to consider it a safe and interesting enough asset class to allocate capital to.