Well it's just lazy to make fun of white people. It's easy because of all the horrible things associated with them, but it's just plain lazy and a real cop-out in terms of writing.
This comic is just about on par with every "stupid husband can't figure out how to work a gadget" commercial ever made in terms of effort.
While it is true that yes, race shouldn't matter and protagonists should be allowed to have any amount of melanin in their skin, we just don't have enough developers/writers around in this industry that can identify with not having less melanin to properly portray a character without their melanin level becoming their defining character trait in most cases.
It's a chicken and egg thing, there aren't a lot of lead characters with skin tones other than 255 red, 255 green, and 255 blue around, so people without those mixes of color feel ostracized and don't get into the industry, and because they don't get into the industry, the tones stay the same color levels because the developers/writers can only personally identify with those color combinations.
The same goes for almost every entertainment industry, that's what creates idiots like Tyler Perry and all that misogynist, generic "gangsta rap", because they are the only ones filling a niche, so they get all the money and praise from their respective communities. It's like if Silent Hill was the ONLY horror game, naturally it would make all the money, and it's why indie games are so successful right now, because they fill niches that no one else is filling.
It's just going to take a long time until things balance out in such a way where characters lacking more sunburn/skin cancer-friendly tones aren't dominating all of our media (especially games), but in the meantime, making lazy comics like these just to provoke rage and be click-bait is doing nothing to further us to that point. No, we shouldn't just sit back and "wait" for things to change, but comics like these will not incite positive, natural change. It just creates pressure and unnecessary rage.
We need rational, grounded advocacy groups. Not trolling.