Well, yes, but this applies to every segment of the population, beyond conspiracy theories.
For example minorities (those in mostly poverty, not succesful ones), poorer segments of the population, fringe ideological or social groups, and in general less socioeconomically "successful" groups will lean to blame all their issues on a conspiracy, or "the system" being rigged against them, or discrimination, or a myriad of other factors that are outside of their control, as a coping mechanism.
Sadly the truth ends up being that this hand washing of responsibility behaviour tends to perpetuate the situation they are in. Taking hold of personal responsibility and attempting to gain control over ones situation are the first steps in improving it, to blame it all on external sources always leads to complacency, because its literally beyond your reach that way. Also leads to misguided "fights" which tend to create a schism between main groups and them.
Using the example of conspiracy theories, their behaviour tends to most parts be 'anti-social', due to general distrust, which leads to lack of socialisation, creating issues with proper socially acceptable mannerisms, habits, expectations, which creates more isolation because it makes it a lot harder to relate to the common population, and making them seek other fringe people who are "awoke", self-segregation and reinforcement of the belief that "they are out to get me", its a downwards spiral.
Although I would question using the word "losers" to describe them, if you apply this label to any of the other many groups that are in a similar situation (self perpetuating behavioural patterns), it could get a lot of backlash.
This is common sense. If you're winning, why look for a reason ? You know you're winning so you roll with it. If you're losing, you look for a reason why to blame other than yourself.