I've had my problems with Doug in the past, but yeah, at least he sometimes lets himself be made fun of in his own show. He even has a segment in his own show pointing out his mistakes. Linkara takes himself way too seriously, and he comes off as a massive hypocrite.
Linkara markets himself as a devout Christian, yet he joins hands with leftists, SJWs, feminists, basically people who HATE Christianity because of how patriarchal and reactionary its views on sex, women, and family are. He whines about women being objectified in comics, yet if what Iron Liz and Jim/Mr. Metokur said about him is anything to go by, his fetishes are far more "out there" than some men responding to their natural urge to like women with big tits and butts. He joined people in complaining about how unprofessional Doug was in making movies, yet his skits have all the seriousness of Kickassia or To Boldly Flee-sometimes funny, usually just padding.
It's not that he's stupid or anything, the man does have talent. I've seen adults who have a genuine love for comics actually give him thumbs up. It's just that his behavior off-camera and some of the things he does makes him look like a giant tool.