Again, not a lawyer, so I defer but:
1) you have state vs. federal. If FBI and etc. Are involved because, say, child porn (internet is interstate duh), or given he was robbing Barb, wire transfers + digital receipts -- it would then go to "who has the worse crime?"
2) in this case, VA state has jurisdiction first (but maybe it's just slow. It tends to be.) As others explained, jerkops can only kick him out of the house, while doing a basic wellness check on Barb -- that's how they got to the hotel (timeline wise.)
3) obvs they got more evidence since Chris didn't try to hunt Barb down (automatic restraint order violation) so bam arrested.
4) the prosecution still has time to collect evidence before the grand jury -- which was set for Sept 16th barring anything in the meanwhile (also Greene isn't super populated or crime heavy enough to warrant round the clock public defender's, cases, juries, etc.)
5) so they go with an easiest to prove charge with high (or in this case no) bail that got him arrested to begin with.
All other charges will be discussed leading up to the 16th, see also: my op about negotiating and posturing between prosecution and defense. They could literally tack on cannibalism if they find out something about Bob, or some other weird shit, or murder, or neglect. But they won't announce it until they know it won't fuck up the case. I think part of the salacious "incest" headline was even to help get more witnesses just going "oh that's NOTHING, he's my deets on worse stuff!"
This was just the prelims to establish if it could be dismissed, or set bail. It went as spectacularly Chris-chan as possible as you can see. And his previous bad behavior (mace + vehicular assault) is a mitigating factor in bail (but it was moot because Chris couldn't stfu long enough for his lawyer to even argue he totally isn't dangerous) and later on post grand jury going to pattern of behavior and character etc. But in those instances everyone felt bad for poor stupid retarded Chris and thought "maybe next time will be different! Uwu"
Still feel bad for Heilberg because now he's going to have to deal with troons sperging out wanting to "help" by inserting themselves. I wonder if he got Chris's toys (the non evidenciery ones) to settle him??? Or crayons and paper? "Here Chris show me your side of the story." Ew.