According to Wikipedia, widget has at least eight different real-world meanings - none of which are remotely connected to the trope currently named Widget Series.
Does anyone have a suggestion to rename the trope?
Topic on Forum:Trope Talk
Apparently it's just a short hand of Weird Japanese Thing just like Teal Deer can be considered short hand for TL;DR.
Either rename it to that, or find something that you find less dismissive of Japan.
If we rename the page to "Weird Japanese Thing", then we'll need another page for all the non-Japanese examples that are currently there.
Wierd Cultural Differences?
Search gives some usage of the phrase. So it's a part of fan lingo, if not wildly popular.