Go to media library
Click on grid view (not list view)
On the right you see the attachment details as in screenshot)
(Have tested on several themes including 2019 so I presume it is something in the core not a theme issue.
Interesting, apparently the “right answer” here depends on whether you believe grammar should follow strict rules (prescriptive) or it should change over time according to observed usage (descriptive). Wikipedia has a pretty good article about this specific case:
I don’t really have much of an opinion either way - either one gets the intended meaning across. If we can come up with something most people are happy with, and it won’t break anything, then it’s fine to make minor changes.
Use of prescriptive or descriptive can depend on context. Many people who use a lot of slang or expletives with their mates down the pub are often able to adapt during a job interview.
We all know the term “grammar nazi” - which is basically somebody being prescriptive in contexts that are not appropriate. I don’t go up to the greengrocer and berate them for their sign saying “Apricot’s 5 for a £” but when it comes to using text in the context of publications, especially those written in a language that may not always be the readers’ first language, I believe it’s a good thing to be prescriptively correct.
ClassicPress is software that falls within such a context. A huge percentage of its users will be professional writers or aspiring writers. Its logo is even a writing implement.