Single post in Server performance and desyncs

Hold on, I got lost reading about this. I don't use QOL, but I see multiple people that do..like what was said before me if those are appropriate and welcomed site changes (/modifications) why would users be punished for them? I'm just confused in that regard. I understand how some behaviors via. clicking habits or site refreshes looks like bots or like an attack, but how would qol be punishable if its welcomed?