Do you think if BTC had a stable price which could only be altered by $0.01-0.10 it would still be as popular and as used?
Well if you look at the problem closely there are 2 sides to this.
In both scenarios you've mentioned,there are a groups of about 30% of people who actually find value in bitcoin and use it as a payment method.
Other 70% in current scenario are attracted with high volatility and a potential for profit.
If there was a higher supply and a smaller fluctuation in price you would have much more people involved,
an actual usage increased and much higher trust in cryptocurrencies,a more healthier market overall.
So that would definitely make it more popular and used.