It has no merit whatsoever. Firstly, because it makes no sense to group managers together based on nationality to start with, and then, because Dutch managers haven't all "failed to find success on England shores" as you claim.
Gullit has done fine, Jol has done fine, Hiddink has done excellent. Koeman did fine at So'ton, less so at Everton. Who failed? De Boer and Van Gaal? And even then Van Gaal won a FA cup despite all his efforts to sabotage his work with his insufferable ego and stubbornness.