I have been trying to look for games but it's very hard to avoid the flood of games like Visual novels and was wondering if there was an updated way to do this old expired technique.

There are no news on that front.

I was just looking at that old article and was about to ask on any updates.  I implore those in charge to implement this feature.  It is hard to find things I want to play, let alone suggest to others to use itch, when such basic functions like search exclusions aren't supported.