I see I will try to find out more by talking directly with the developer. But I still see a potential, in the event that nodes with low capacity could no longer maintain the reference implementation, Floresta could extend their life span at no extra cost to the node operator.
Discussion
I have not read yet the Floresta’s proposal/implementation. :/
Here is a brief summary 
At a first glance, it looks like it is a lightweight Bitcoin full node (a node that only downloads the block headers instead of the entire history); thus, not useful for newcomer’s IBD phase, since it is not an archival full node. But I can be wrong. I’ve not done enough due diligence regarding that topic.