Their TDS makes them stupider by the day.
This is because in order to believe all the increasingly ridiculous and stupidly thought out lies their overlords say about the Trump administration, they have to eschew all logic & reason and suppress their critical thinking skills.
If you don't use those skills regularly, you lose them over time because the neural pathways involved will be repurposed for other tasks. It doesn't happen all at once, it's a progressive loss of intelligence over time.
That's my working theory.
That's why they keep getting stupider and stupider by the day