I haven’t read anything yet about male night elves being wardens, but with females being able to be druids just as males are allowed to be priests now – the gender norms are much more relaxed – it can be reasonable that males may soon (or have) joined the ranks of the wardens. And with female demon hunters as well it’s only fair to add their male counterparts of justice!
Likely since wardens are traditionally females, males may have not yet reached high enough rank or status to be of any distinct rank and may still answer to their female superiors, perhaps this reflected in armor that lacks the crescent rings on the back. But at this point I’m speculating! Would be fun!
thisacelovesheadcanons 