Malicious compliance gets the website two benefits: 1) Annoying the customer enough with the popups might net a permission to track from an user who originally did not want the cookies 2) Making the cookie banners as frustrating as possible increases the political pressure against the EU, hopefully leading to them repelling the anti-tracking legislation

There's no upsides for a website from providing an easy "Never track me" button, or just not using analytics cookies - you don't have to put up cookie consent banners for technical cookies used to save e.g. light/dark mode preference