There wouldn't be cookies in the first place without the science of baking. Celebrate it!
Someday I want to coat my whole arm in icing and dip it in a vat of sprinkles. I wouldn't know what to do next, sadly, once I'm thoroughly spackled with hardening icing and sugary bits. I wouldn't want to eat it, I just want to take pictures of it maybe and call myself "Ol' Donut Arm". I guess just a donut will do.
The best thing about these cookies to me is the fact that they didn't turn over all the M&Ms to make them plain red. I see this as a sign of smart priorities. Just jam the chocolates on there as fast as you can because the sooner they're done, the sooner we can eat them!
Normally I'd scream overkill at a cake this busy but there is some amazing balance going on here. A striped rainbow heart inside a striped rainbow cake? A rainbow of fondant sprinkles so perfect they must have been placed there by very patient elves? I swoon for this kind of overkill.