The others don't show the template and the transactions currently being worked on. The example given was that you're directing your hashpower toward a pool; they fill the block with one jpeg (which gets very low fees) but those contributing don't know that until after the block is won, and their work is rewarded less than it could have been
BTW I'm not defending any of this stuff just passing along what they said today
Another significant point -- correct me someone if I get this wrong -- was that the decision to flip the bitcoin core version is made by the template creator. Imagine a BIP that the plebs don't support gets through but hashrate-contributors don't know until after the block is won? I assume this is another part of the transparency - the version the template is based on (created for?) will somehow be transparent *before* the block is won so we can pull our hashrate if need be
