I wouldn't necessarily agree that it's the pressings (though it might be). What exactly happened at this dealer? What did he do to demonstrate that it's the pressings?
Many dealers these days lack the knowledge to properly set up and adjust a vinyl rig. The full-range and dynamics of many modern releases will test the abilities of both the playback equipment and the person who set it up.
I've had several people mail me "flawed" vinyl that played perfectly in my system. I've also visited people to adjust their rigs, and had to tell them the vinyl they were attempting to play was flawed or damaged. The devil's in the details and the person providing the answer should demonstrate they know what they're talking about.
Example: here's a simple test for pressing flaws. "Play" the suspect passage by turning the platter by hand, very slowly, so the music is a low frequency growl. If there are pressing flaws/voids they'll be audible as sudden transients at much higher frequencies than anything in the music. If you hear that at very low rpm's then the record is indeed flawed. If you don't, the record's probably fine and you should look for equipment or setup problems.
If you played these LP's on Gregm's, Sns's or Tfkaudio's rigs (or mine) and heard the same problems then I'd agree with your dealer. But without a better description of what he did to diagnose, I'd say the jury is still out.
If you're really looking for help, answer the questions posted above and work toward developing an answer based on the evidence. All you've done so far is repeat what your dealer said about the vinyl, which may or may not mean anything.