There are many benefits of advertising, for the publisher and the consumer, but if you prefer no Ads then Brave will let you can turn them completely off. My point is that Brave is offering choice to the user, whereas most browsers simply leave you open to trackers and ads from third parties. At least they are building a solution for the old banner-ad network from Web1.0 . If you have something you want to promote, you can do it as a Brave Advertiser. You can even recieve tokens for viewing them on this new advertising mechanism, so that is an incentive for the user also. Having a choice is what I like about it.
RE: Brave is creating a new DEX aggregator to compete with current crypto wallets