I think a lot of those mentioned would find it pretty tough week-in week-out in the prem. Teams outside the top 6 in the prem are so much stronger than in rival leagues
Very much this for me.
Also totally disagree with the OP pov that the PL is pretty terrible. I take the opposite position and think it is the best it has ever been in terms of the depth of quality. At the top end it is perceived as being weaker on the back of there being no truly dominant side(s) and poor CL performance. Sure, there is a big gap to Bayern/Real/Barcelona but even now we have got 3 out of 4 through (just) to the last 16 again. By way of comparison both Germany and Spain have lost 2 teams in the group stages.