It could be that Q was a psyop and he believed that Q was some unknown insider attempting to help him. To believe Trump knew what was happening at in everyone's head at all times or being correct about absolutely everyone he meets is a stretch for even the average supporter.

It is just as likely simply an abysmal failure as it is bullshit.

Edited for grammar

DJT was the main target. Keeping him from taking action was the entire point. The followers were window dressing.