Yeah, the insert makes it feel WAY more premium, and stabilizes the entire thing. My old one was super floppy and curled up, that can’t really happen with this one.
Regarding the chip, I’m sure it’s fine, Amal mentioned in the past that it has to do with failing the unlocking process when trying to actually pull data from the chip:
I wouldn’t think TagInfo could cause any harm. Still not trying it with mine though haha.
Sidenote: They put this big QR code sticker on the back of the new US passports, with some info about the new passports along with some travel info. They said it’s fine to remove. Mine was put on super super crooked. Rotated and off center.
I went to remove it, and residue everywhere 
I tried multiple methods of removing it. It was this super annoying glue, it reminded me of the adhesive on those awful stickers you get on books sometimes. Ended up having to resort to rubbing alcohol and friction, but the alcohol was enough to slightly dissolve the dye (which I was worried about…) so I had to be super careful and sparing. Managed to get it off mostly, but the back doesn’t look super brand new anymore…
EDIT: The all important sticker…
Totally worth leaving a ton of shit on the back of a paper passport for.