What not? We frequently notice this behavior in main net as well, where large fees correspond to real world, hard money. In here, you can fill blocks, essentially, for free. So perhaps Ordinal users, or whoever thought of a new bloating-chain idea, test their software in the new testnet4.

I still don't understand why people give value to large sums of the testnet4 and what we can do to disincentivize this activity. Previously, you talked about changing to CPU mining algorithm, but besides the fact that it is no longer Bitcoin, we'd still create an environment, where people would need to spend computational power, and therefore, it'd still involve some cost, which would create just another market.