From your perspective it’s an arbitrary and meaningless roadblock, but from the perspective of groups you’re trying to get involved with it’s a fundamental cornerstone to developing an understanding you share with the group.
That is necessary for the group because of a bunch of reasons, they might be interested in making sure you grasp the idea of not wasting energy on the lumpen or upholding the mass line for example. They might need to make sure their members can stand up to the most basic scrutiny possible before turning them loose on the public. They might gain critical understanding about you as a person that helps them trust you or at least not view you as an infiltrator. Heck, they might just see you as a comrade worth developing.
That’s why I suggested multiple times that you stop trying to join communist groups. Anarchists and electoralists will gladly put you to work to accomplish their ends regardless of your understanding.