The Jedi cannot force a child to be turned over to them
A number of canon sources says they can, or at least could at that point in time. That's why some people hated the Jedi and called them baby stealers. The new Jedi order doesn't do that; they accept recruits, and we don't know what the older versions did. But the Clone Wars era Jedi can and did take children away from parents to train as Jedi.
I disagree, actually. Midichlorians make a lot of sense if to take a few liberties with canon. There's a massive dissertation on Stardestroyer.net that I'm not in the mood to quote that essentially lays out exactly why midichlorians as they're stated in the movie cannot exist. The general gist is that they occupy no biological niche whatsoever, could not possibly have evolved given their stated nature, and make absolutely no sense whatsoever, because if they did work that way, then the Force should not be able to be passed on along family lines, even though canon explicitly states that it does, often strongly. Using that same line of logic, also doesn't work, because it fails to explain how a random individual can spontaneously manifest the Force at random, even when no one else in their bloodline ever has.
Thus, either midichlorians don't do what the movies say they do (or in context, the Jedi aren't sure/are partially wrong about the midichlorians), or midichlorians were artificially created or engineered. Since the second one makes even less sense, it's assumed (and concluded by in this dissertation I'm talking about) that the Jedi are either:
Mistaken about what midichlorians are and the function they serve.
Bullshitting everyone on what the midichlorians do for reasons of their own.
Given everything that's involved, I consider the first one to be the most accurate. Like the dissertation concluded, I believe that midichlorians are an effect of having the Force, but don't actually cause the Force themselves. They're an indication of it, and can be used to indirectly measure it by looking at how concentrated they are, but they aren't actually causing Force sensitivity. They're not batteries or conduits for the Force so much as they are moths drawn to the flame that is the Force manifesting itself in someone. Only in this case, the flame is heatless and invisible, which means if you want to measure the flame, you have to look for the moths.
