I think it is too early to conclude that the growth is related to more userbase entering the market. I'm pretty sure there are other factors at play, such as volume decrease in other exchanges due to regulatory problems and so on. I also think that 3% is still not that huge compared to the market at large. That being said, competition is a good thing, so if another big player comes it will be good for the market. It is a good thing if we don't rely too much on Binance, Coinbase, or other big-name exchanges.