I’m new to the game (only since October) and luckily, down in the Bronze leagues, have yet to have a run-in with Yodin.
Yeah, income has dropped significantly since Chaos Legion cards came out, with many more yet to hit the market. IF Splinterlands can continue to draw in new players at anything like the rate it had been, prices could stabilize. But that does have a bit of a Ponzi feel to it. Relying on new folks to pump things up is not healthy in the long run.
I can't say I agree about the Ponzi. I don't benefit from new players joining via any referral system which is the ethos of that platform. You won't see Yodin at low levels unless you meet someone like me who is dragging themselves up into the higher leagues.
I find Bronze dull to play in, it gets better in Silver. Try levelling your summoners and monsters some, and you will get out of it quickly.