That "something" is just people searching for this news story, rather than interest in signal for the sake of using it.

https://en.wikipedia.org/wiki/United_States_government_group...

NL clearly has some background interest in signal however, unlike the UK, which spikes on this story alone:

https://trends.google.com/trends/explore?geo=GB&q=%2Fm%2F012...

Your link shows a peak at the time you mention but the interest in subsequent months has been around 4 times higher than it was prior to the inauguration, so it seems inaccurate or even misleading to say that demand has "vanished."