Anime Episodes -- General Question

See it quite often, and I understand it because this site relies heavily on IMDB. A lot of times when I add anime titles, episodes are missing descriptions, titles, episode images or even running times.

Is it site policy to strictly rely on IMDB?

Most recent example: I just added UPC 816726025162 – and most of the episodes are missing descriptions and there are no run times. I just fixed my local copy thanks to Amazon Prime Video.

But this is just one example. Most anime titles I can see all that info needed on Crunchyroll’s streaming site. Sometimes even TV DB dot com.

Naturally if I buy a new release anime there is a greater chance of most of the details being missing.

Do I report the issues as I come across them?
As a Submit to Core only submits the episode numbers and names, I cannot submit descriptions, etc.