Your argument is a bit disingenuous. Prior to him leaving South America, when managing sides with reasonable chances of "success" he won things. Two (and a half - weird system in Argentinian league) league championships with different teams, as well as a Copa Libertadores (South America's CL). He didn't win anything major with Argentina (Olympic gold) or Chile, but what he did with that Chile side was exceptional and they subsequently won a Copa I think, heavily influenced by the work he'd done. he changed their whole ethos and they started winning against teams they hadn't beaten away for literally decades, got them to a WC for the first time in three attempts and they were really unlucky to go out to Brazil, after largely being the better side.
Since then the clubs he's managed (ignoring Lazio and Lille who he barely had any time at) Bilbao, Marseille and Leeds have had no realistic expectation to win trophies, but he took Bilbao to two finals, got a pretty ordinary Marseille team to the top of the league for a chunk of the season (yes they faded to 4th but were up against much better teams that year) and won Leeds a Championship (getting them to the PL after years of failing to do so).
He has never taken the "cushty" CV job.
More (much more) importantly is how he believes the game should be played and coaches those football teams. His Chile side were great to watch, young, voracious, incredibly high tempo football. When I watched his Bilbao team obliterate Ferguson's Utd it absolutely blew my mind. That a humble team like that could not just skank a flukey win against a team like that, but comprehensively savage this uber club, expected to just roll them over. Those two games, especially that first leg, are ensconced in my brain forever. We'd seen Guardiola's Barca dismantle everyone, but they had all these wonderful footballers too, what Bielsa did with humble ingredients was astounding.
From some of the shit I've read about him, he probably has some kind of borderline personality disorder.
His methods are not flawless, they possibly don't suit uber clubs full of high net worth prima donnas, he can be manic and obsessive and demand things of players that are sometimes impossible to maintain, his teams often struggle to maintain his relentless methods for entire seasons, and his high risk football can be punished, but the fans of nearly all of those teams enjoy the ride and often forgive the failings because they can see a coach who actually coaches something tangible, it's often ferocious, aggressive and about taking the game to the opposition and ramming it up their arses, not bending over or trying to sneak wins, and attempts to extract the absolute maximum out of the players.
I think he's influenced (directly and/or indirectly) a lot of the type of energetic, aggressive football we are seeing in Germany the last few years (including the current Bayern coach) people like Klopp who has married some of the Bielsa type approach to a smarter, tactically more astute, periodised approach, Gasperini's Atalanta, not to mention the obvious Guardiola, Pochettino etc. Some of those may not even be directly influenced, but I'm sure there's maybe an indirect influence there, where his coaching ideas have permeated their way around football.
I think your iconoclastic tendencies are massively misguided here.
