Jimmy-
Nah, doesn't discredit you any... with most girls. I spent a little time to learn good oral sex technique in the beginning, and since then I've rarely used it. Girlfriends will occasionally whine about it a bit ("I want my pussy licked!"), and I still give it to them on occasion, but only when I feel like it. Which isn't super often. So long as you are sexually satisfying them (and there aren't any major problems in the relationship) it's not remotely an issue.
The reason a lot of women online report oral sex being a big thing or a deal breaker, I firmly believe, is because most men aren't any good at providing non-oral orgasms to women. For many women, because they've never had an orgasm from anything other than clit-licking, cunnilingus is their sole path to non-masturbatory orgasm.
If you provide powerful vaginal orgasms to a girl, though, she won't care too much about oral sex. It's fun if you do it, adds some nice variety, but it's not terrible if she doesn't get it for a while.
And if you provide powerful anal orgasms to a girl, oral sex becomes even less of a thing for her, since she's used to powerful deep orgasms in her vagina from your cock, and powerful deep orgasms in her anus from your cock, and small fun orgasms in her clitoris just seem less exciting by comparison.
Still great for foreplay, or if you enjoy oral a lot (and I know many guys do), it can still be loads of fun for her.
However, it's optional if you're good at providing other paths to pleasure / satisfaction.
Chase