The forum is talking out of its ass about 4-4-2 like it's the devil. You're playing that way, because you've lost a world class winger and because you've lost out on Champions League because you weren't balanced in the 4-3-3 since you lost world class performers in Xavi and Alves. It's a logical step to take and leaves your options open to get back to something more comfortable as soon as your new guys come in, settle down and are no longer frowned upon when they fuck up. It's both protecting the new and fixing the old. What could possibly be wrong with it? People have zero patience and never let things play out on a month-year basis.
In many ways people are as fickle as the Madrid supporters are about the BBC comeback. Having the old washed up BBC return that is old, washed up, but can still be effective is a transition as much as the 4-4-2. Who in their right mind would keep BBC permanently when you have a world class playmaker in Isco and ready to explode Asensio just waiting to be released and cause havoc? Why would Barca keep 4-4-2 with Coutinho, Dembele and possibly Griezmann coming in? This is all serving the long term goals while being a surprising and successful strategy for the short-term that prioritises results over style.
And people need to realise that so bad.