It's not the same. Slackers are always going to be slackers. Quiet quitters are the people who work hard, excel at their jobs but refuse to do extra without compensation.
Things like cleaning the break room refrigerator when they're the only one asked to do it instead of a rotation of responsibility. Giving up break times for a pointless meeting that went over. Going behind someone else or shadowing them while they learn their job while still expected to make your own high metrics. Twking on extra projects outside your job description and above your pay grade without additional compensation. Doing your manager's work because they're ineffective in the role --if you're managing, you should be making mabager pay. Taking work home to finish outside work hours and essentially working for free off the clock.
Many of these things are actually illegal, yet workers get pressured to do them every day under the guide of "someone will take your job".
My manager is in an office in another state. Our team communicates via Skype. I start the first shift so I see when she logged off every day. So I'm in our office and firing everything up at 6:30am every morning. Skype launches at 7am for the early shift workers. My supervisor starts her shift at 8am. Her work day ends at 6pm. Every morning my supervisor Skype account says "[Supervisor] last online 5 hours ago.
That's means she's logging off at 1am her time (CST) after working a 10 hour shift every day.
She's not being compensated for that. That's the sort of BS quiet quitting is about.