Pretty typical, I have seen worse. Most of that is just raw unfinished parts or surfaces that Freightliner leaves that way. It all depends on your dealer some will say its normal and some will take care of it. The most that a dealer will probably do is hit it with black rattle can spray paint with no prep. Personally I like to do stuff like this myself and it also gives you time to learn more about the chassis and poke around and check other things out. If you do it, start looking for all the hole that Jayco doesn't seal up to keep the critters out so have some spray foam on hand.
Brian & Jeannie
2018.5 Seneca 37RB with tons of mods
2015 Jeep JKU Rubicon