That is a bit pessimistic. I believe we can all come to terms in a proper discussion. While we had the unfortunate event of unsourceable quotes, I am pleased to have at least narrowed down what official statements can be used to argue for the site's view of the Main DB Canon.
Mar 12, 2018
Toriyama comments that the Boly movie is the next story of the Super anime.
https://www.kanzenshuu.com/2018/03/...y-staff-visual-release-date-toriyama-comment/
https://twitter.com/Herms98/status/973361940213809152
Dec 6, 2018
Shueisha's Weekly Jump announces Broly's and Vegetto's introduction into the canon, meaning that the Broly Movie is considered by them as Canon.
https://twitter.com/Herms98/status/1070890625803804672
I believe I can properly word the site's view of the main canon.
The original manga is in the main canon by default.
The Broly Movie is officially called into canon by Shueisha's Weekly Jump who is the primary publisher of the Dragon Ball Manga.
Toriyama, the sole writer of the movie, commented that the Broly movie is the next chapter of the anime story.
The Dragon Ball Chou skims the Broly arc, implying they want readers to see the Broly Movie to know what happened.
This can be taken in two ways: Shueisha recognizes the Broly movie as canon but only for the Chou manga.
Or Shueisha accepts the Super Anime as part of the main canon as well, connecting it to their original manga.
I believe the figure below will help visualize it.
While Toei Animation and Viz have made their own english statements regarding continuities, I will admit that Shueisha has more pull than Viz as the original manga publisher. After looking at the Japanese manga backings, I see that they don't have the continuity statement like the English Viz publications. Toei's statement is another matter that can be discussed further.