How much information should go in an entry's info/introduction blurb?

Just noticed two Trope pages, related to unidentified music, that infodump their entire search's history into the info/introductory blurb up top.

Wondering if they shouldn't be condensed down to the barest background and basic info. As it stands, both pages basically name everything from current leads, a constantly changing topic, to every movement ever done in the search. The intros are longer than all Trope pages combined, in other words.

This information is readily available elsewhere, like Wikipedia and each song search's own Subreddits, and again, this information changes all the time, so how useful is it to leave every single detail on the subject's pages?

The pages in question:

https://tvtropes.org/pmwiki/pmwiki.php/Music/EveryoneKnowsThat https://tvtropes.org/pmwiki/pmwiki.php/Music/TheMostMysteriousSongOnTheInternet

This seems like it'd be more fitting for Ask The Tropers.