Anyone that does not admit that physical attraction is THE most important thing is simply lying to themselves.
Depends on what you mean by that.
If you are saying it IS the most important thing in finding a good mate then that is totally and utterly and completely wrong.
If you are saying some people make that the most important, then spend all their time miserable, then I could agree to some extent but, only insofar as the person who deliberately, consciously holds appearance above everything else who then, has no problem with any and all other incompatibilities as the primary concern has been addressed. I know some people like that and they are happy; they got what they wanted and need.
That is not for me and I would venture it is not for most people. Your mate can be gorgeous on the outside but, if you're not connected on the inside, attracted on the inside, where all, or most, of the gears mesh, then, it either isn't gonna work or you're gonna be modifying the criteria of what 'happy' means in order to put up with it.
Vrai made a brilliant point years ago about voting;
People should show up at the voting booth, answer a questionnaire and then be told 'here is who you voted for'. Maybe it's not the appearance you had in mind but, it's the person who you are good with ideologically.
Finding a mate could work the same way.
The trick is being honest with yourself and knowing what works for you. In a perfect world, two young people in love grow and evolve with one another, or, close enough, and live happily ever after and that's the REAL challenge; how an individual evolves and grows. What matters most in the relationship at 20 may well not be 'right' enough, if it ever was, at 30 or 40 or 50.
Proof of how hard this is is in that we don't do arraigned marriages anymore showing that those that ostensibly know you, are older and are experienced at this sort of thing, aren't any more successful at it than an 18-20 year knucklehead.
Life, relationships, it's a contact sport. Go live it. Appearance is the first thing to give way.