Ok folks, a thought exercise:

What if we used 1 satoshi instead of 1 bitcoin as a unit for denominating value? People would freak out - we have quadrillions of satoshis in existence! How would that actually impact the value or market price of BTC though?

Now let's use 1 GigaIota as a unit of value. Boom. There are only 2.8 million GigaIotas in existence. The current price for each GigaIota is 0.1 BTC. There you go. You can safely proceed now to research the project in greater detail and assess its value based on stronger criteria, rather than getting stuck on the total number of coins.