You are right, we all have varying opinions, but your argument is flawed.
You argue against the recklessness of hiring a foreign manager with no experience of the premiership and then extol the virtues of Wenger because of his experience.
Who had heard of Wenger before Arsenal? Or Pochettino before Southampton? What about the two guys pulling up trees at Wolves and Fulham? There are loads of examples.
Yes it would be reckless to just take a lucky dip or a flavour of the moment person, but if the decision was based on solid research of management style, tactics, personality, project outlook, training etc. together with recommendations from ex players and other coaches you can limit the chances of failure.
The Premier League has moved on. With the top teams playing high press, fast paced technical football, I would argue it would be far more reckless to invest money in a Manager with an outdated style of play who would be highly unlikely to advance the team any further.
Southampton brought in Pellegrine this season and that hasn't worked too well... I am hoping we are gone beyond bringing in a young coach and hoping it succeeds. We are a big club we need to be a appointing a manager that offers more than guesswork.
You use Wenger as an example.. a very good one.. if it wasn't over two decades since he first came.
Pochettino.. great example.. I wish we had him... how many others?
Guardiola, Mourinho,Klopp,Pochettino,Conte, Wenger and Dyche... are the managers of the clubs above us . Of the top six , Wenger apart, every manager was already a big name when appointed.
If Emery agreed to join Everton I would sack Sam this evening but I don't think that will happen.
You mentioned Wenger and Pochettino ... one a long time ago, the other recent.. how many managers have been appointed and failed in between.. hundreds I expect.
Appointing the right manager is incredibly difficult and thinking that a manager will succeed because he plays a particular style of football is suicide. Just as well Mourinho is not doing a job interview with you.