..i cant stand pink floyd and fleetwood mac and don't understand why their albums are constantly lauded..
I can answer part of that. For Pink Floyd, it was as their musicianship was unparalleled and at the time, given the recording technology, they had phenomenal sound engineers that really did make near perfect recordings. Moreso that it was done on analog tape, decades before digital. The audio fidelity and sonic qualities of Pink Floyd's recordings were ahead of their time.
Get a proper stereo system with a turntable and listen to the LP of Animals, by Pink Floyd. You will hear what is basically a representative of the apex of the art of analog recording.
As to Fleetwood Mac - they started out as a blues band and then went pop in the mid-70's and were just wildly popular.
From a 2025 perspective, it's solid pop music, they wrote songs with the right hook that could catch listeners. The best pop songs have easy melodies and can be sung along to. That's the basic formula of the genre. It's never changed in almost 100 years. Which when you start to see how the recording industry works - there's a reason the 70's pop resonates today. It's aimed at demographics of age, and everyone is in the target demographic at one point in their life.
The industry rolls on 25-30 year cycles. Now the heavy metal/pop sound made by bands like Sleep Token is swinging back around. Last time the loud and angry sound hit big was with the 90's grunge that supplanted the heavy rock hair bands of the late 80's.