Why am I able to edit Johnny's post titles?

Not for Posterity
1

I didn’t, but I clicked on the title of one such post and saw that I could.

2

You have the “regular” permission. I am guessing that gives you permission to do some cool stuff.

“Permission to recategorize and rename”

3

@IndigoWizard
Can you edit my post title?
I misspelled hygiene.