I am partially arguing for the sake of it but only because I know I'll disagree with most of what you write because most of it is nonsense.
Scoring in the dutch league means absolutely nothing when you consider the pap forwards that do well for Dutch teams. He had ONE top quality season before we bid for him.
Not valuing someone like Aubemeyang now is exactly the sort of thing Wenger does and is exactly why our squad had been short of players the last few years.
He overvalues his own players and undervalues players he sort of wants.
After your comment about the Dutch league strikers I thought I'd look at the top scorers in recent years and see what they have done since.
Last season it was Depay who is now at Utd, they seem to rate him but he hasn't shown top form for Utd yet as far as I'm aware, though it's still very early since he left Holland.
The year before it was Alfred finnbogason who has since played for Real Sociedad where he got 4 goals in 27 games in all competitions, only 2 in the league in 23 games. Before moving on loan this season to Olympiacos where he has 2 goals in 11 appearances so far. Not exactly setting other leagues on fire.
Going back another year it was Bony who did well at Swansea and now plays for Man City. So he did pretty well for himself.
Then it's Bas Dost who went on to join Wolfsburg and has 35 goals in 74 league appearances. Pretty good return in a good league.
Then it's Bjorn Vleminickx who had a tough time in Belgium before a successful loan spell in turkey, then some time not doing very well in turkey and he has just signed for a team who won the Turkish second division last season to qualify for the top league. Not been a success story.
Next up is Suarez, as we know he did well with Liverpool before moving to Barca. Obviously could score in any league.
Then Mounir El Hamdaoui who played went on to have decent numbers at Ajax then less successful spells with Fiorintina and Malaga. So he played for some good teams since but never really delivered.
Then it's Huntelaar who has gone on to be successful in Germany.
And if you look back further there are quite a lot of big name players (Van Nistelroy, Bergkamp, Kuyt, Ronaldo etc...).
It seems quite hit and miss, almost every other year is a success story. It'd be interesting to do the same with other leagues and see how the top scorers do after there big season.