I feel like it's more than a handful of areas, though I'll grant there are plenty where academia or mainstream media outlets are the most reliable/trusted source. If you're talking about astrophysics, the history of the eastern Roman empire or the US' government foreign policy, the Wikipedia setup will work perfectly.

On the other hand, if you're talking about Star Trek, the MCU, Taylor Swift or the Legend of Zelda series, the most reliable source is probably not going to be either an academic journal or the New York Times. Many of my videos and articles are about games in the latter series, and the reliable sources for that would probably be something like speedrunners, dataminers, etc. For most of those things, the reliable source would either be the artist or company that owns the rights, or some fansite/video creator that's been documenting them for the last three decades.

Plus, a lot of the time the sources Wikipedia accepts are just laundering the same info anyway. It would be very, very easy to get misleading or incorrect information about the next Pokemon game to go viral, just by sending a few publications a link to a random blog and letting them take it at face value. In a depressing number of fields, fact checking and research is minimal even from name brand publications, and some guy's post on Reddit can get treated like gospel.