Well...First of all, I guess you didn't bother to fully read the post where the writer said that HE DID, in fact, clean the lint filter every time. One of my friend's house burned completely to the ground due to exactly this problem - lint accumulation inside the dryer where it shouldn't have been and catching fire. They, too, cleaned the lint filter every time but very fine bits went through the filter and settled around the dryer drum. Actually, contrary to your belief, if they hadn't cleaned the filter so religiously it might have been better!
Tell it to Smokin’ Joe ‘’mama ok? My dryer works fine.