Doesn’t anyone, including @Queenconsult , see the problem with the OP’s whole premise?
How absurdly flawed it is to argue about this, in THIS forum?
AIBU means “Am I being unreasonable?”
It was meant to be a specific sub-section of Mumsnet where people posed problems or dilemnas, and others came in and gave their criticism, or sympathy, or life experience.
What has since happened (and it’s the Internet, so yes, anyone can post etc) is that because of the sheer amount of eyeballs in this section of Mumsnet, some posters like the OP have taken to treating it as if AIBU is Mumsnet. in its entirety.
Therefore, if you only posting in AIBU, and you want to break the forum’s theme and post something random and abstract and silly, you then need to preface it with a LIGHTHEARTED headline - to avoid the regulars from actually weighing in on the topic.
It is the equivalent of someone choosing to listen to Radio 4 or Radio 5 if they were perceived as popular, then demanding that they play Taylor Swift or Ed Sheeran, just because they fancy a pick me up.
I mean… there’s Heart radio, or Capital for that. They get “traffic” and listeners too.
Likewise on Mumsnet, if you want to post something lighthearted and get loads of traffic; there is Mumsnet Chat.
YABVU @Queenconsult because basically you want this section of the forum to bend to your rules, when you could quite easily go to the bit of the forum where you wouldn’t even need to write “lighthearted” before you posted!