While I do agree that some mounts like ridiculous when in flight I also think there are some that just look silly when on the ground. Thing is there's a large variety of mounts that suit either and both environments so if you don't like the way something looks when you're flying, you can choose to not use that mount when you're going to be doing a lot of flying (and vice versa when you're going to be on the ground a lot like before having found all the Aethercurrents). That's pretty much on you.