From a fundamental perspective, trading, transaction, and asset movement are activities that are integral within decentralised programs and their applications.
Let’s look at an example: Imagine there is a new DEX, and they need users. Liquidity mining program and have a lot of liquidity, they have a lot of attention to their LPs but this is not equal to a lot of users and actual use.
Through the use of Fluidity’, users would need to interact with the protocol to earn yield. Hence when users do swaps and trades through Fluid Assets they are earning yield.