1.Advantages:

The goal of BAT is to replace interstitial ads that affect user experience by creating hierarchical networks.
Maintain anonymity and privacy to users
Fast speed due to ad blocking
BAT can be used to exchange rewards and services with participants and the BAT ecosystem or withdraw from the platform and exchange for other currencies.

2. Disadvantages:

BAT is mainly based on the Brave browser users, so there will be fierce competition with Google Chorme, Safari, ...