Even if that were true, it's not definitely anything like an "all-time high", it would be merely the "highest recorded during the short span of years we have been measuring".

Which is a very, very short time. At least when you consider that according to paleontology and geology Earth has been a world humans could have lived on for something like a few million years... well, merely over 400 million years ("could have lived on", not "lived", although it seems our origin is constantly being pushed further back in time, so who knows how long we have actually been here). And most of that was before the current Ice Age started, 2,58 million years ago (and is still supposed to be ongoing, we are in an interglacial right now).

So, since we are in the middle of a slightly warmer era of an ongoing Ice Age... Heh. An "ALL TIME high"? Don't they believe in science?

I know, I know, they "believe in science" - or whatever results whatever study gets, to be more accurate - when it suits them, and forget everything about that when it doesn't.