More ridiculous wikilawyering (as in "misinterpreting policy or relying on technicalities to justify inappropriate actions"), precisely what you accuse others of doing, with "internal inconsistency" being the latest straw you're clutching to. You can not "posit" the sources aren't solid enough by offering the fact they also use Prso's nickname in addition to his real name as a supposed proof of their lack of solidity. Ludicrous. The fact that Prso mostly goes by his nickname, Dado, does not make his real first name, Miladin, non-existent. And his real name being Miladin IS backed up by numerous reliable sources. The fact that sources mentioning Prso's real name Miladin also use his nickname Dado is a "inconsistent" only in your world. No one disputes he mostly goes by Dado.

You've been removing verified info from Dado Prso over the span of 8 years already (whilst with a straight face characterizing the work of other editors' as "harping"), standing guard against, and I quote, "Serb nationalist talking points", a "thinly veiled political advocacy", and an "unverified Serbian name claim". 

Not to mention accusing people of WP:Point. Precious. I guess including information backed up by reliable sources qualifies as "proving a point" in your little world.

There are hundreds, if not thousands, examples of Wiki BLPs titled according to the person's nickname, and all of them have the the person's real first name included in the lede:
Co Adriaanse (Jacobus "Co" Adriaanse)
Sol Campbell (Sulzeer Jeremiah "Sol" Campbell)
Alex Ferguson (Alexander Chapman "Alex" Ferguson)
Matt Busby (Alexander Matthew "Matt" Busby)
Jupp Heynckes (Josef "Jupp" Heynckes)
Ruud van Nistelrooy (Rutgerus Johannes Martinus "Ruud" van Nistelrooy)
Marco van Basten (Marcel "Marco" van Basten)
Uli Hoeneß (Ulrich "Uli" Hoeneß)
Toe Blake (Joseph Hector "Toe" Blake)
Cotton Fitzsimmons (Lowell "Cotton" Fitzsimmons), and so on, and so forth (just to keep it to the sportspeople)

Somehow I don't see any sign of you over the last 8 years on any of those bios, removing the individuals' first names from their articles' respective ledes nor are you spewing any of your wikilawyering nonsense on those article's talk pages, complaining that the real name sources are "internally inconsistent" (btw, most of the bios don't even provide sources for the first name information) or pointing out that the person's nickname is more widely used than his first name as basis to remove the first name from the lede. 

Also, whatever happened to that earlier claim of yours about including Dado Prso's real name in his bio constituting "thinly veiled political advocacy", and an "unverified Serbian name claim"? Considering there are numerous non-Serb sources stating Dado Prso's real name to be Miladin, do you still see it as a Serb nationalist effort? 

So to recap. There are reliable sources meeting WP:BLP criteria under WP:SOURCE and WP:NEWSORG as 'factual content' (including a well-established news agency with numerous reprints) that explicitly state his real name is Miladin. No amount of wikilawyering from your end can change this basic fact.