That feeling when you have 13k+ charms right now, mmmm... :))
I have over 41K charms, I should be good to go....I think
I've been doing pet charm table missions whenever I see them on all my alts, so I've got about 12k of these guys stockpiled, as they are the only rewards from those missions worth anything at all.
I'm currently swimming in 48k of Polished Pet Charm due to the army of alts and mission table from BFA. So earning new ones isn't exactly high on my priority.