RB used to throw drivers in the seat to see if they sink or swim.

If you’re a recent fan I could see how you’d think that.

But that is why Ricciardo is being dropped, which is ironic because the Albon/gasley was originally caused by him leaving RB. He has sunk and is being replaced by someone they think can swim.

Ricciardo was a seat warmer than why wasn’t he made aware of it?

The moment he rejoined to be a marketing mascot he knew his role as seat warmer.