Is "to call someone out" in the sense of "to criticize/accuse/shame publicly" a new use? [duplicate]
I did a search through Google Books for variations on this phrase, such as "to call out," "call them out on," etc. Here's some of what I found, including an apparent use of it in the sense you are talking about at least as far back as 1985. I'm limited on time or else I would look more.
2005: Source
1999: Source
1985: Source
Also, it never occurred to me where the phrase "to call out" came from, but in my search, I found several references to tennis, where people talk about "calling [a ball] out," meaning, "declaring that it is 'out'" per the rules of the game.
As the duplicate question alludes to, the OED's first citation for this sense is from 1981.
call out [under call, Phrasal Verbs]
Originally and chiefly U.S. To expose or identify (a person) as acting in a dishonest or otherwise unacceptable manner; to challenge or confront. Frequently with on.
1981 Akwesasne Notes (N.Y.) Autumn 12/3 The military had..tried to cover up the incident. This..Military commander..had been responsible during the case of the Elder Lester Athars and so the people now were openly calling him out as an assassin, a murderer.
2013 G. Albin Altered iv. 38 I dislike how he speaks to Greta. But there's no time to call him out on it. OED
To publicly criticize or fault (someone)
The FDA will have to start forcing companies to be transparent and call them out on it when they're not. m-w
call someone out, call out someone (phrasal verb)
North American Draw critical attention to someone's unacceptable actions or behaviour.
People were calling him out for his negative comments Lexico