Any news source that reports "record-breaking temperatures" is, deliberately or not, making these dangerously increasing temperatures sound like a good thing.
No, record-breaking means it broke a record. If it was used almost exclusively for positive things, you might have a point, but it is routinely used for negative things as well. For example, "storm" is the third most related topic based on Google trends.[1]
Maybe they'll turn electrical signals into a picture using complex image processing that varies between sensor manufacturers.
To make sure I don't get banned for being ironic, that's intended light-heartedly to say lots of processing already goes on. The tool is attempting to represent what both sender and recipient usually intend.