I really dislike the cellphone and how much time and idles it has in Sims 4

They could just add a Technophobe Trait, Sims with this trait would avoid using phones, computers, and other tech on autopilot. They'd also get negative moodlets from using them, but that is easily countered and they can put a way to avoid it in the game. For instance, get logic skill up to 5 and the negative tech moodlets go away. That's how I would do it anyway.