What’s happened is that too many people have noticed that the air and the land temperatures have stopped increasing, especially at anything near the accelerating CO2 trend line and now they have switched gears to focus on the ocean temps.
These temps, covering some 71% of the globe’s surface are even easier to assign mysterious effects to as they have no continuous coverage contradicting any ‘new’ data from the ‘latest’ report which starts the sequence of discovery, adjustment and conclusion all over again.
A moving target is hard to fix both sights and markers on.
Circulation patterns and peripheral effects from ocean temperature shifts have always been treated as natural events not influenced by the general atmosphere above.
Water freezes and water melts depending on where water finds itself.