Thanks for raising.

I recently changed the tagging system to preference MAL/AniDB links that uploaders put in the 'Information' field at Nyaa.
VARYG references the first season's MAL link for the examples you gave, so the system here just follows along.

Unfortunately VARYG does sometimes mislabel the season in their release names, which is one of the reasons for this change.
I'm interested to see if VARYG are willing to fix up their links to point to the right season.
I can go back to the previous strategy of guessing via the torrent name, though I'm somewhat reluctant to fix their stuff if they won't fix their posts themselves.