Well, I'll say I've never seen one like that ... and besides posts on CP, I probably get over a dozen PMs or emails with pictures of various Parker boat questions each week.
The layup in that area should be nothing but solid glass and resin, and I believe it extends about 4" upwards, if not more. But to be safe, I'd contact Parker or your dealer.
If it were mine, I'd rough up the area and solvent wash with acetone. Then I'd apply my favorite blue synthetic waterproof grease to the male threaded drain plug (and it's base) and then spray it with Pam cooking spray with olive oil and then insert it TIGHT. Then I'd back fill that area with epoxy, making sure to leave a nice hole through the epoxy. You can always drill through the epoxy, once hardened, as long as you don't bugger up the pipe threads.
The grease and olive oil acts as a release agent to protect the threads and allow you to get it out again. I might even throw that plug away and get a new one; I'd have to double-check the fit. About 30-min and then an hour into the cure, I'd back off the plug a turn or two, and then re-insert.
Lastly, I am VERY surprised your boat got out of the factory like that, but I believe the issue is purely one of cosmetics.