I’d want to push back on that. This view is also heavily informed by modern rejection of religious institutions, colored by decades worth of abuse scandals and cults getting exposed (e.g., Scientology and the Unification Church). The “cult that captures children and brainwashes them” doesn’t seem so unreasonable after watching Jesus Camp or any numerous videos of indoctrinated fundamentalist children. The Jedi also acting as an added branch of government doesn’t help much, given how religious institutions have invested in candidates over the years. Hell, I’m not surprised Jedi molester stories aren’t more common within AO3 fanfics.
The intention may have been noble to show monastic life in a positive light, but the execution in the films has left things open to this more critical interpretation. I wouldn’t say it’s wrong at all, but rather just operating off of what has been presented in the media/real-world context. It’s a bit of that post-Catholic scandal/post-911 antitheism of which the internet has long enjoyed.
I agree with all this - it’s just bizarre that apparently George Lucas really believed he was portraying the Jedi in a positive light. The interpretation most people on the Internet seem to adhere to - that the Prequels purposely portray the Jedi as a flawed institution (like the Catholic Church or something) - is almost certainly incorrect. Multiple interviews with George Lucas reveal that he believes the Jedi and their anti-attachment philosophy was correct, and the only reason Anakin fell was because he gave in to his fear of loss.