I don't understand your logic: these decks are difficult to pilot and therefore not a problem for the game? These decks completely rule out skilled counterplay and drain all fun out of the game for the opponent. (Watch Freddybabes' recent YouTube video for an assessment of the arguments for and against. Spoiler alert: he and most of the more experienced players think these decks are bad for the game.)
Also, you can't just forfeit against these people on ladder because you lose mmr. Needless to say, forfeiting on casual is a no-brainer.
I respect Freddybabes’ achievements in Gwent but I see him as a young popular streamer and when it comes to ‘no unit’ decks I don’t share his view at all.
I played about 300 games on the ladder in past 3 seasons with my ‘no unit’ Ethiene deck. I managed to climb from R15 to R7 in the first, from R11 to R7 in the second and this season from R11 to R7 again. Than I used the meta Big Woodland pointslam to push to R6.
My ‘no unit’ deck plays 8-9 units, 8-9 spells and 8 artifacts. The notion that you can run 2-3 units and be competitive at higher ranks (R15 and brtter) is hard to believe. Also thinking that you need destroy artifact effects to beat it is a total misconception. To call this deck no skill or low skill play is a major misunderstanding. It’s super dificult to build properly and master and you have to think hard on the spot every single game. Same goes for your opponent. It is beatable with many types of decks. The ‘no unit’ is truly strong agains unit based heavy removal decks.
What is ‘fun’ to play with or against in a competitive TCG/CCG is very subjective. The easiest solution is to add a casual ‘fun’ mode where you can play only units, no spells no artifacts. That would make all the people calling for simplistic, purely unit basesed play happy, without the need to change the game and ban or remove cards and mechanics in general and preserve the much needed complexity, variety and freedom of choice.
Note, I was a Beta player and I played MTG a lot before Gwent on and off in past 3 decades.