Parents bought a "Certified" Used Honda. Multiple minor issues, are they SOL?

Background: My retired parents recently bought a new to them (single previous owner) car through local Honda dealership. They’ve had the car ~6 weeks and this weekend was my first time seeing it. I me it seems they trusted the clean Carfax and the Dealer’s “Honda True Used” a bit too much.

I’ve noticed quite a few issues that I’m shocked exist on a certified pre-owned vehicle. Do y’all know if diagnostic or repair of these would be covered in anyway under the Honda warranty or are my parents stuck with the bill?

1. Front axle or suspension has high pitched squeaking going over rough roads.   
   Video: https://streamable.com/9ha29f

2. Splash guard is substantially damaged in front left wheel well. Clearly old damage.
   Images: https://imgur.com/a/xhw3Uxa

3. Splash guard is held on by zip ties. Related to #3.

4. Small gap between bumper and body panel. Related to #3.

5. Front right bumper shows some prior damage and repair but isn't in paperwork or service history from dealer.

6. 2 chips in windshield (unfixed) present at delivery.

I’m thinking maybe the suspension issue would be covered but the rest I assume my parents get to bite the bullet for not getting a proper inspection done? It's a bit unclear to me what (if any) obligations the Dealership/Honda has due to advertising a vehicle as having passed the Honda multi-point inspection criteria to certify the car when multiple issues exist.