Could be worse. I like more 2014 list, but the new one is still better than any other alternative outside codex.
Grimoire, The Age of Decadence or Pathfinder results are not truly surprising considering the amount of praise for these games on the codex -not balanced by butthurt, still more love for them here-. New Vegas incline was expected also as its fans are very present and active recently. I slightly disagree with their positions, but I could agree with all them in top 20-30.
The Witcher on the other hand has extremely inferior rpg mechanics comparing only with other story-centric rpgs ranking lower on the list, and even in the pure narrative perspective -if story would be really rpg defining feature- some of them are clearly superior. If we include in the comparison other non story-centric games I doubt The Witcher 3 could rank higher than 40th position, being generous, there are so many games with better rpg mechanics. TW3 excels in writing, characters personalities, music or artistic design, all valuable aspects for some type of game, but not specially rpg linked.
Darklands, Betrayal at Krondor, most Ultimas, Gothic 1, Daggerfall, both Kotors, Arx fatalis, Realms of Arkania 1,2 & 3, most Wizardrys and M&Ms, Dark Sun, The Temple of Elemental Evil or to cite some recent examples Kingdom Come: Deliverance or Kenshi, are all better than TW3 in most perspectives that define what is an rpg. And I cited here some games that I don't like specially, but still.
Also what unexpected and extreme incline in Gothics and Deus Ex! Maybe what happened is that old codexers suddenly started to love with passion those games to the level of give them double -and more- amount of points in 2019. Yes, maybe is this. Or maybe new generation love Gothics and Deus Ex more than older generations... or maybe who knows, simply:
or
Finally I didn't expect so bad results for Darklands. I think Darklands deserves a place among top 30. Not only by relevance in history of rpgs, but because many of its mechanics and design have been only minimally implemented in other games in 27 years.