BUR #6382 has been approved by @evazion.
create alias symbol_commentary -> symbol-only_commentary
symbol_commentary is supposed to be used when a commentary consists solely of symbols. Right now, it's heavily used in cases when any symbol is present. Theoretically this means symbol_commentary should always be tagged with commentary, and never with commentary_request. The hope is that naming it something like "symbol-only_commentary" would lead to fewer mistags.
Previously renamed from emoji_commentary in topic #18187.
I'd also like to post the question of whether things like URLs and hashtags should disqualify a post from being tagged symbol_commentary.