I enjoy Hux acting like a buffoon. Makes him less of a Tarkin-archetype like he was in the first movie.
Personally I don’t mind Hux being less of a Tarkin-like character (although I didn’t find TFA Hux similar to SW Tarkin at all), I don’t even mind Hux or any other FO official struggling with higher level leaders and even conspiring against others. But Hux’s “buffoon” nature is a little jarring, specially because no other FO person seems to be very competent and smart against the good people: when it comes to harming anonymous people or advancing the plot, they may build superweapons or tracking devices which work through hyperspace, they may mount surprise attacks, but they allow important, Force user prisoners to be guarded by a single Stormtrooper, for example. Or they send two TIEs to capture two people and a droid when the Empire sent four TIEs while pretending to go after the Falcon.
It also raises the question of why has Hux become the big general. But Star Wars has a problem with characters proving they’re as good as other characters say (General Calrissian, duh).
I also think Ren’s chaotic nature diminishes the dangerous, genocidal nature of the First Order, and affecs the other characters, who aren’t up to OT Empire standards anyway (Snoke, Hux). You may not want to make a Vader-like character, fine. You may not want to make Ren as smart and capacle of mounting Batman Gambits as TESB Vader because you already made TESB. You may also want to say people like Ren are dangerous, regardless of their general competence, because they don’t know what to do with their own emotions and fears and uses their insecurities to harm other people. But you can put said character in the good side, rather than placing the character in the position a traditional villain would take.
At least the ST villains aren’t as bad as PT villains.