DEX volume has grown a lot since this thread was created in October 2019. 
https://static.coindesk.com/wp-content/uploads/2020/07/dex-vol-chart-1-710x458.png
https://static.coindesk.com/wp-content/uploads/2020/07/dex-vol-chart-1-710x458.png
Yes and it has grown even more the last few months thanks to Uniswap. Unfortunetly you can not buy anything else then ETH tokens on it. Would be nice to have everything in one place sometime in the future. Once that happens, then crypto is golden.