He's got some facts wrong
yes please correct me
Happy to do so.
COINBASE (Newly generated coins) 1PKN98VN2z5gwSGZvGKS2bj8aADZBkyhkZ 6.26810839 BTC
OP_RETURN ?x?x?x?x?x?x?x?x?x 0.00000000 BTC
OP_RETURN ?x?x?x?x?x?x?x?x?x 0.00000000 BTC
in pools that pay out to a pool owner only(later shared). their 'variance' in this example is instead of using a asics address as one output they use a random op return per asic(like an asic ID, unique to each asic). and then another op return as a an extra-extra-nonce to give that asic more work every few seconds
I'm not aware of a single pool that uses OP_RETURN in this way, and I can't think of any reason that they would. It would be inefficient to use OP_RETURN in this way when they can (and do) just use the input section of the transaction for extranonce.