I do agree with this sentiment, it is a little bit off of FD to remove what was a default skin and replace it with another, but I dont really mind that much. Is it game changing? no. Would I buy the paintpack just for the skin? probably not, No matter how much I liked it beforehand
In reality the skins don't change gameplay in any way, as said it isnt worth fighting over such a petty matter
Personally, I hated the default skin so was happy to see the back of it. All kind of moot now as I recently bought and applied a military green skin for my attack DBX variant.