TruOil is a finish, not a glue. If the board is well made, then it doesn’t need to be reinforced or have a finish applied as you can get it looking and feeling fine by sanding. If the fibres are loose, then IMO, you want to firmly glue them in place, which means CA or thin epoxy. That’s the engineering solution.

Just ask yourself ‘Would I glue a neck in with TruOil and trust it to hold?’ OK, CA isn’t the right choice fir gluing neck in either, but it would certainly be strong enough to hold firm.

But really, I’d just avoid any kits with engineered boards. There’s no need for them now and you should be able to order the kit with a real wood board.