It has bad management decision written all over it. Some idiot in the hierarchy thinks they are being cute and ‘relatable’ in their own words I’m sure.
KFC uses commercial pressure cookers. You can blow up a kitchen if you aren't careful around those things. Fast food doesn't look like it requires skills because they have managed to bring an assembly line to the kitchen. It does require a certain amount of spatial awareness, and the ability to switch tasks rapidly.
Guarantee that's what this is for. No restaurant manager would bother denying with outright denying an application, yet alone sending a rejection email.
Oh I like people having fun at work as well, what I don't like is corporate communications trying to weirdly mimic people having fun at work. Maybe I'm just too cynical, but I often find these jokey comms to be souless and artificial and almost never feel like they're genuinely having fun
KFC in particular uses commercial pressure cookers, or at least they originally did I haven't worked there since before they were called KFC. Those things are dangerous, and if you didn't appear to have a decent amount of spatial awareness, I wouldn't hire you at my store, cause an accident with one of those pressure cookers could end in an explosion.
Things might have changed since the 90s, however I worked at multiple KFCs and the intelligence level of the people they hired to run these things was pretty damn low. In fact, at one store most of the cooks were stoned every single shift. Nobody got seriously hurt.
That's not how a professional company rejects an applicant. Judging by this grammarless email (and this email alone), it sounds like you may have dodged a bullet. I am sorry that you've been rejected, though. That's never a fun experience, and their lack of compassion in their "cute" (but actually rather insulting) email is incomprehensible. Just because they didn't see you a a secret recipe, doesn't mean you're not. KFC has gone down hill more than almost any other chain in terms of flavor and quality, and their email here is a testament to their decision-making skills they seem to still be lacking.