Tbf there's been a few confirmations of just how bad the alternative can get
Nevermind situations like the night sisters or sith, a force sensitive child who has no guidance as their powers manifest is about as destructive potentially as an unsanctioned psyker can be in 40k, just via being a planet shaker instead of becoming a living portal via which demons rip their way into reality to burninate the countryside.
There is no kidnapping, parents can refuse and the students can leave.
The thing is... Why would you say no to the Jedi?
The Good Guys of the Galaxy come in and say, "Hey, we'd like to guarantee your child a future of being one of the most important people in the galaxy, with all their needs met as we turn them into space wizards who fight evil."
They won't even kidnap a fuckin enslaved Chosen One, Space Jesus Christ just think critically for one second.
Hey, we’d like to guarantee your child a future of being one of the most important people in the galaxy, with all their needs met as we turn them into space wizards who fight evil.
According to a lot of "not movies" media, many people who were trained to be Jedi didn't make the cut. It's one of those things that required a combination of remarkable effort and sheer talent and most people who were potential Jedi just lacked the raw skill to be considered one. As such, the Jedi had a large support auxiliary of force sensitive attendants and custodians who basically took care of the grunt work of the Jedi order. They weren't true "Jedi Knights," but they were a part of the order. They just spent their time scrubbing toilets and doing paperwork rather than banging queens and dismembering enemies of the state with laser swords.
I would take any of those jobs over mine any day of the week. I get minor force powers but I gotta plunge a toilet and room and board is free? Yes please.
Somewhere, there was some poor Force Sensitive who got just enough of a connection to the Force to get massive anxiety while in the Temple but not enough to leave his gardening job before Order 66.
You are also forbidden from fucking and, I would imagine, also masturbating. I think that's the most interesting question about the Jedi Order: do they let their weird virgin space cultists shoot rope as long as it's not into a person? I'd imagine not.