The Wither book is not LOTR nor GOT. Where it comes to story telling Whither uses more atmosphere than linear story line.

Like in real life when you listen people talking about politics, you also do not have to understand everything. When Geralt talks about politics with Jaskier only little is outlined, but one thing is clear Geralt is cynic ignorant while Jaskier is cynic opportunist.

The whole world of the Whitcher is revealed very slowly through dialogs. And this is where this show is failing. Dialogs are often boring, not helping to build up the mysterious world.