This is what most people need to hear. Taproot wasn't the change that enabled data storage. It enabled the marginal space and cost efficient storage of data per transaction by removing the MAX_SCRIPT_SIZE limit of 10000 bytes but the envelope method could still be used in witness v0. Multisigs could also be used to store data and I don't think OP_RETURN are restricted by a data size, smaller than the max script size, at the consensus level.