That caught me eye too. The article says a bit more about it:

“I’d say it’s very much on its way out … it’s basically rotting underneath. The water is way too warm for it to maintain. It’s constantly melting,” he said.

“I expect that to continue in the coming weeks, and expect it won’t be really identifiable within a few weeks.”

The way I interpret that is that it will have broken up enough that it would no longer be identifiable as the single iceberg A23a, but there would still be lots of its ice floating around.

Those 4 particles per cubic meter are gonna have to do some heavy lifting

Ah yes, that makes sense along the <checks notes> 15 mile wide stretch of water that separates that area from Canada.