No, analingus is disgusting, but anal sex is not.
That's a purely subjective opinion. Doesn't change the fact that whether it's the mouth or schlong, they're both touching an area that's been consistently contaminated by waste.
But ay, if you insist that touching an actual dirty spot such as the anal canal is fine as long as it's only by the schlong then by that same logic you should be able to understand why a footjob wouldn't be gross.
Btw I'm not really kink shaming the humble ass eaters or anal lovers out there. I'm just putting things into perspective by testing this one person's sexual logic.
You can like what you like as long as you don't put down what others like and imply that what you like is above theirs.
Stay humble, fellow porn consumers. We're all equally unholy in the eyes of the Savior, unless you're strictly into vanilla but even then that depends on how frequently your thoughts are about sex.