Those aren’t gigantic. That’s pretty much normal-sized for Stellaris or Pathfinder:Kingmaker/Wrath of the Righteous patches.

For fun, I looked at the latest major patch notes for Stellaris [0] and Wrath of the Righteous [1]

CP 1.5: 300 lines, 24.6 kb

Stellaris 3.3: 380 lines, 34.6 kb

PF:WotR 1.2.0e: 416 lines, 30.8 kb

I did nothing but paste the patchnotes into a txt file, so empty lines are still counted for all 3 games.

[0]: https://forum.paradoxplaza.com/forum/developer-diary/stellar...

[1]: https://store.steampowered.com/news/app/1184370/view/3137321...