Wonder how they simulated EW in that war game

Presumably they could just use EW as is since it isn't (directly) lethal anyway.

That article is massively overstated (or perhaps more accurately, doesn't note the problems with Ukraine's approach) but NATO not adapting doctrine shouldn't be any surprise to anyone who followed the Ukrainian 'counter'offensive and the very useful feedback and suggestions made by NATO trainers and analysts*. Which made it pretty clear they only really wanted to learn stuff from Ukraine that they want to learn, when necessary lessons are very often the ones you don't already want to learn.

*Just drive around the minefields, bro lieber. The solution to your armoured assault columns getting blatted since they can only proceed along narrow corridors is... to put even more of them into those narrow corridors. Just like the Russians did so successfully north of Kiev. Put more troops in bigger groups into the kill zones. No diversionary attacks, concentrate everything in one place. And the all time classic from the British MoD: progress is slow due to pro Russian shrubbery. If those had failed of course it would have been 'should have used smaller groups and diversionary attacks' instead...