I'm a little surprised your comment is turning gray for this. I have the same visceral reaction to that word. And it's not like I care about pink shirts or other cutesy things. It's specifically that word, used by an adult.

Some people have similar reactions to words like "moist" or "juicy". (Those would be context-dependent for me)

But "yummy" is just hard to hear for some reason. Except when it's a small child expressing their like for cookies or candy. Then it's totally fine.

Anyway, just thought you'd like to hear there are more of us out there :)