rich p said:
pretentious claptrap wrapped up in obscure language IMHO
Okay, so because you don't understand it or find it beautiful, you just dismiss it... Poetry is not always easy, and you don't always have to 'understand' it, but that doesn't mean it is rubbish or indeed pretentious. As Abitrary said, you can let the words just wash over you, sink into you. It does something beyond the simple meaning of the words.
And pretentious is the last word I could ever think of using for Sean O'Brien. He is the opposite of prententious, because he knows
exactly what he is doing and the effects he is creating - and it works. He may be out best contemporary poet. And not just IMHO - he's won just about every poetry prize going too.
Yet you like Larkin? Larkin is often tricky, difficult and cold - he has far more in common with O'Brien than Betjeman, who is about as far from Larkin in style and manner as one can imagine. IMHO of course.