What's the origin and culture of funny astronomical terminology?
Any causal claims or associations relating to language use are never going to be able to be proven, so the best answer to your overall question is: "nobody knows".

You can use Google's ngram viewer to visualise the appearance of a specific term or terms over time.

Perhaps astronomers generally have been better as a field in making their research more approachable by not pitching their discoveries in superior-sounding high-falutin sesquipedal pomposity. But it isn't universal; for every approachable 'Hanny's Voorwerp' there is an ancient-language-originating label like 'heliosphere'.

Geologists also use non-latin terms like "slip" and "fault" and "hanging wall". Is that to make geology more approachable for mass-media public reach-out PR?