Let me answer a part of your post before it gets moved to the right area.
As a "suported by RF4" streamer I can only answer for my own actions and how it works for me.
Some of us that have content that suits RF4's plans and can contribute to the exposure of the
product somehow gets after application and consideration from RF4's side an opportunity to
add some extra to their streams like Giveaway items and for some even hosting the big Gold competitions.
The gear I was sent was meant for Giveaways and Contest prizes, I have never used them for fishing
and grind just as hard as the rest of the world to buy/repair my gear and baits. The only benefit I personally get
from this is the added value to the stream with more viewers during the sponsored events which in turn
generates more new players in the end.
At the moment RF4 is working hard to get the name out so the Steam release will generate new players,
as a streamer I can and will continue to promote their product simply because I feel that it is a good product
and I want it to be a success for the RF4 team. No in game items or money is gained by this, it only creates
more work to organize the events. I even pay for my Premium so I can send the winners their items.