@laptech: Two points by way of partial answer to what you have written:
One concerns Alex Ferguson.
Yes, he was a terrific manager, but his ("incandescent") style of management would not be remotely tolerated (such as, throwing a boot at David Beckham, so that the latter required stiches above his eye-brow) or deemed acceptable nowadays. An assault charge would not be inconceivable.
Actually, in his own way, - brilliant though he was - in some ways, he is as much a dinosaur as is Mourinho.
The second concerns the PR stuff: This is often a condition of the bloated salaries players receive, to ensure continued fan engagement, especially if the club has an international profile and fan base (as Manchester United most certainly does); it comes with the package.
Moreover, nobody would want a return to the days of players playing purely for passion, - a time when they were paid a standard working class salary, which left many of them physical and psychological wrecks - not to mention financially constrained - once their playing days were over and they had retired - while the club owners of the time still made profits.
Historically, successful footballers were often working class lads with a talent for the game, frequently lacking either the education or raining that would have equipped them for something else, and football (once the salary cap - a maximum wage set by the Football League was lifted as a result of Jimmy Hill's successful campaign in 1961 when he chaired the Professional Footballers' Association) was one of the few means available to them of achieving some degree of social mobility and financial security.
Actually, while I do think that the game is in danger of devouring itself, and losing sight of larger issues (such as issues of identity and being rooted in a community and sharing its values) by allowing clubs to be bought by oligarchs the origins of whose fortunes do not bear close examination or inspection, or nation states with questionable ethics and deplorable attitudes to human rights, I also think that it is all too easy to simply attack the players, - most of whom are working class lads made good - and without whom none of this could ever take place.