Why so much hate?

Rating: 10/10 (22 April 2020)

Well, I have watched a 500+ movies (most were from 20th century),and some were crap, some were astonishing. I don't remember that I degraded any movie like many reviewers here degrade this one.
When I heard It's gonna hit theathers I bought a tickets 2 weeks in advance. Movie started and I really enjoyed almost every minute of it. I liked the soundtrack full of 1968 songs which some of I used to listen a lot and their great timing such as ,,Hush'' with Sharon Tate's hair waving in the rhythm of a song and amazing free ride with Brad Pitt through 1969s Hollywood which landscape seemed really cool and lively.
I also liked Old Hollywood references (spaghetti westerns, Polanski, McQueen etc.)
Next, I don't remember seeing very often movies where an actor plays the actor who plays someone else and still somehow you can identify all three( scene where Rick Dalton holds a girl on a knee) in a wonderful performance by DiCaprio.
I also liked rehearsal scenes first with a magnetophone and later in actual studio.
Every scene with Brad Pitt as Cliff Boot (the most Tarantino character) was entertaining : Bruce Lee scene, Spare Tire scene and of course the last scene.
I was waiting for a Sharon Tate murder for a whole movie, and when I realised that instead I got a crazy Manson family vs Cliff Booth fight I laughed and whole movie in the moment came completed as a perfect fusion of sightseeing old Hollywood and crazy Tarantino action.
Movie made my day and I thought that everybody will found it charming. I was wrong. Many of my friends called it crap and bad. I thought , OK, they never heard what actually happened to Sharon Tate and they do not get references or understand Tarantino's way of expressing tribute to particular events or genres.
But when I saw pile of negative reviews on IMDb I was seriously questioning my taste. What's so wrong and bad about this movie?
Acting? It was great.
Story? Interesting depiction of an everyday life of an old Hollywood fading actor, his stuntman and New Hollywood actress, they connections and huge differences.
Duration? I don't know, maybe I got a stamina from watching movies like Gone With A Wind, Ten Commandments, 1900, Lawrence of Arabia etc. so this movie didn't seem so long to me.
Plot? O Yeah : no plot , no plot blah blah blah . Well many great movies have no plot such as La Dolce Vita or even Pulp Fiction. Sometimes directors try to improvise, sometimes they want to study characters ,and sometimes they want to make you feel like stucked in a day with a characters which I believed It's a case with this one.
I watched all 9 Tarantino films(I'm not even a huge fan of him) and I admit, this is not his best,but it's far,far away from being his worst. Well, It depends of a taste but in the worst case it's definitely better than Jackie Brown and Death Proof(I liked these movies as well)
So anyone giving this movie a rating 1,2 or 3 should not be taken seriously and I found it hard to believe they actually understood movie at all.
If Joker with x time recycled plot and psycho/white heat mother complex themes have a rating 8.7 this movie should have at least 8. I don't get it.