3. Spending undefined witness (or Tapleaf) versions (ie, not Witness v0/BIP 141, Taproot/BIP 341, or P2A) is invalid. (Creating outputs with undefined witness versions is still valid.)
i am not surehow this rule is enforced, but the spirit of it is malicious. can spend to new (always true) but it tries to say a new uasf can't be activated. or am i reading that wrong?
