As a new owner of one of these, I'd have preferred the real exhausts poking out.
I'm not a big fan of fake tips (careful typing required there!), but at least it has four real ones hiding in there. I've followed a lot of Merc V8 SUVs recently and they have some funky shaped tips, but only two actual outlets behind them?
https://www.autoguide.com/blog/wp-c...ercedes-AMG-GLC-63-S-4MATIC-Review-SHA-15.JPG
Also +1 on them getting stained/corroding. Its there already, and my old car had exhaust shrouds which got discoloured quickly. With metallic plastic, its hard to avoid...