Folks should just remember that apostrophes are never used to pluralize. Of course there are like 2 exceptions, but better to be right 98 times out of 100 than guess every time.
And even the exception is pretty rare: you use ' when pluralizing a lower-case letter. For instance, "There are two i's in pluralizing." The reason is obvious: you could wind up creating a different and confusing word. But how often do you even need to do that?
That and, depending on the stylebook you use, some specific words and uppercase letters that could be considered confusing when pluralized, like "Oakland A's" and "Do's and Don'ts" (according to AP, while I much prefer Chicago's guidelines).
Wow, I've probably seen it a million times but never noticed, but "don'ts" just looks so wrong. "Dont's"? "Don't's"? "Donts"? AAAAAAAHHHHH
Also acronyms, again depending on whom you ask. At least based on my own instincts and online searching.
While your instincts may say so, not according to any one of the major style guides (AP, MLA, Chicago, NYT, APA, Columbia). An apostrophe is only added for possessives rather than plurals with acronyms, but a lot of people still add them erroneously. Most sources online will say "don't do it but some people do by mistake."
To be fair those ages were set when the comic book culture was a lot more light hearted. They did get aged up to ~approx 16 when becoming Robin when they rebooted the franchise to address this. Still not ok, but they did try to address it without alienating the older fans.
I remember reading a comic once where Gordon loses his shit on Batman for recruiting children to fight alongside him. May have been after Jason Todd got killed or when Barbara got crippled
There was a time Wally West ripped into him when the League tried to talk to Wally about his kids superheroing. "I'm getting lectures in child safety from a man who's gone through four Robins?!"
The last Batman movie I saw was probably in the Dark Knight series and I'm pretty sure there was no Robin. When was Robin last in a big movie? Has he come back since then?