So there's this study that was done in the early 1920s (that was shown to me during two separate "film editing 101" courses) called the "Kuleshov effect."
The experiment was simple, and rather than trying to explain what it was, I'll just link a modern remake below, it's only a minute.
The actor has an expressionless face.
But depending on what we're shown once we cut away - be it a kid in a coffin, a woman on a sofa or a gourmet meal - we, as viewers, will project our own emotional reactions to the sequence of images, and the actor's impassive face.
In the absence of context, we create it ourselves by hanging on to what little information we have to then form a narrative.
In the Prequels, we either aren't shown or aren't shown in an emotionally-satisfying way:
How the Jedi teach all younglings to love without becoming attached.
How the Jedi's culture works.
What their status is, in the grand scheme of the Republic (not very high, and they're powerless to change it).
The Jedi's day-to-day, mediating between planetary leaders, helping them find compromise.
The Jedi's various interactions with Anakin.
The Jedi having fun, laughing, eating lunch, being shown in a normal, humanized light.
We know that most of this stuff is happening because GL says so, but the Prequels aren't supposed to be their films... so he only shows just enough of the Jedi Order to serve his stories of how Anakin and the Republic's gave in to their greed and fear and became Vader and the Empire.
AKA, the absent context, the blank expression on the actor's face.
So an audience that wanted to know more about the above-listed items but instead got a whole lot of "politics" talk will either reject the movies entirely out of disappointment, or attempt to engage with the material, in which case they'll go:
"The Jedi forbid love, that's what their whole culture is all about, repressing emotions, they can do more but can't, they always mistreated Anakin and were trying to purge themselves of all humanity in service of logic and the greater good."
AKA, the projection, like with the Kuleshov test.
That's not what the films say, nor is it the narrative intent.
But in the absence of context explicitly disproving any of this in an emotionally-satisfying way, the audience won't help but project their own impression of the Jedi ("holier than thou, hypocritical assholes" - an opinion formed because the Jedi were not developed or humanized enough on-screen) onto the narrative.
And there's only so much legwork Lucas' commentary, comics, books and TCW can do.