"Random" (and misrepresented) images in Photos collection for Tarzan: The Epic Adventures

This is something I've never seen before. I'm not sure what to make of it.

Tarzan: The Epic Adventures was a largely forgettable late-1990s TV series in the "UPN Saturday afternoon" vein. It ran for just a single 22-episode season and starred Joe Lara, who died in 2021.

But the odd thing is the IMDb photos collection for the title:

•  All of the first twenty-five title photos (of 62 total) are images of actors from the series cast list.
• Each one is labeled the same way, "$NAME at an event for Tarzan: The Epic Adventures (1996)".
• All of them are clearly just random headshots of those actors, not taken at any event whatsoever (much less one for this particular series).
• All 25 images have no relationship whatsoever to the title, other than the fact that the actors pictured were part of the cast.

Here's what the thumbnail grid looks like for the first few (of, again, TWENTY-FIVE):   

Why are those images there, attached to that title? Are they valid title images that belong there under IMDb policy? And who is putting in the effort to submit all these photos, falsely claiming that they were taken "at an event for $OBSCURE_1990S_SHOW", when it's far more likely they were taken from the Google Images search results for each actor's name?