In the past three years I've been consciously observing people who have blind faith in three things. The common denominator between the three is that I also used to have blind faith in them until I woke up about three years ago.
The most subtle and problematic type of blind faith is that you have blind faith that you have no blind faith. Even observing the above mentioned people, I can't say with certainty that I have no blind faith that I have no blind faith, if not in these three things. Even after liberating ourselves from one matrix, we can never be certain that we aren't trapped in a higher-dimensional matrix we aren't aware of.
One of the main characteristics of many of those who have blind faith in something is that they aren't interested so much in truth as in depending the object they have blind faith in or their very blind faith itself. They already have a foregone conclusion.
This leads to another common characteristic of these people. They are not open to other views. Instead, they are only interested in "proof" that strengthens their conclusion and reject any counterargument as nonsense. This way they unconsciously decide to remain ignorant.
They also have blind faith in propagandists and propaganda tools that support the object of their blind faith and use them, whether knowingly or unknowingly, uncritically even after they have been proven wrong in order to stick to their blind faith.
In the past three years I've been encountering more and more people who have blind faith in these three things. Of course, I'm fully aware of their apologetic argument as I used to have the same blind faith. But few of them seem to have studied counterarguments and can refute them without emotionally blaming those like me who dare to challenge their blind faith. The moment they start using this "tactic", I simply stop arguing with them and ignore them.