And then there's the next graph. A bit confusing because it uses a different baseline, but where you can see the very recent trend becoming horizontal. (And can't really see any early trend because you can only distinguish 2 years.)
Honestly, I'm not sure what to take from that article. But after a needless sensationalistic introduction, I don't think I can take it at face value.
An edit: here's a much clearer view of the anomaly, from a different source, with yet a different baseline:
https://ourworldindata.org/grapher/temperature-anomaly
Very recent values have a really large error bar that the source on the article shouldn't have. But you can't use one to fill the missing data on the other.
I've always thought the smoothed line should be truncated (so that it doesn't show present-day estimates where data is lacking.)