@PortLargo what diameter is it? I'd think the boiling wort would wash both the oils and acids into the mix???
Mine is 4" and I thought the same as you . . . but bitterness was very much muted the two times I used it in the kettle. Bigger diameter would obviously help, plus having your whirlpool tube shoot directly in would probably do the trick for the oils. They make a smaller one for dh'ing in the keg . . . again I found poor oil extraction if using much more than one ounce (and who dh's with one ounce?). I did find the 4 inch'er to be an excellent filter when racking from a primary that has been dh'ed.
It was $85 and it's 6x14. They strain oil with it so i'm hoping the pellet junk will sink and the oils seep out. Didn't realize how fine it was until i got it. Guess its love/hate item.