Super Testnet on Nostr: I looked into it further, and it looks like the codebase actually does confiscate ...

I looked into it further, and it looks like the codebase actually does confiscate those outputs. For the sale of "simplicity," it applies the p2sh rules to all transactions in all blocks (including pre-P2SH blocks) except ones occurring in one specific block that they made a single exception for. Thus, the other exceptional outputs are now unspendable.

Source: https://github.com/bitcoin/bitcoin/blob/13891a8a685d255cb13dd5018e3d5ccc18b07c34/src/validation.cpp#L2305