I've gone down on 5 girls who didn't shave or trim at all, and I had no issues at all, really. I pushed the hair back with a hand, and I went to work, and the hair was not an issue at all.
I prefer to go down on girls who at least trim (current gf shaves), but either way, no problem. More important to eat the pussy than to get my way.
If I can eat some ass (and I can), then I can eat some pussy. Girls do makeup and plucking and all kinds of other expensive and painful things to earn my attention, and I will do them the justice of true, earnest devotion to their orgasm by whatever means necessay. I would literally cut my own arm off to fix the divergence between male and female orgasms.
Never have I ever refused to go down on anyone. I've been really tempted a few times (one girl, three guys), but never refused. I will never go down on a guy again, most likely.