Interesting that religion is traditionally regarded as creating conformity of behavior, and now it can be an excuse for "I can do (or justify) whatever I want to - because of my religious belief."

Does reason and logic still exist?

Yes it's legal to kick that juror out. Unfortunately it's not legal to lobotomize that juror which is actually what should happen lol

Interesting point this.
Here in Australia I was called up for Jury Service in 1989 in a Murder Case.
There were 23 others called up besides me, went it came to me being either selected or rejected, first the Prosecution asked if I was religious or not, to which I replied that I am an Atheist and got the Yes from the Prosecution.
Then Defense asked IF I thought that being an Atheist would either hamper or enhance, etc, my deliberations of the evidence/s brought forward to which I replied, " Religion/s have NO place in Courts of Human Justice," I also got the Yes nod from the Defense as well..
And so they went through everyone else UNTIL of the 23 they came down to empaneling a Jury of 9 declared Atheists/Agnostics, 2 Nons ( No Beliefs at all btw) and 1 single Believer.
It took 4 days and 17 hours for us to finally reach a verdict of Guilty BEYOND a Shadow of a Doubt and about 90% of that time was spent with the Believer trying to tell everyone that " God is the ONLY one who can dispense Justice because God is Justice personified."
The Defendant was sentenced to 25 years of imprisonment with a Non-Parole period of 19 years to be served and we later learned that the Judge had a wee conversation with the Believer, in camera ( Chambers) where she received a somewhat stern talking to as to the differences between Human Justice and the irrelevancies of Biblical Justice.
So, YES, a BIG Nix, No, Zilch, Nada, etc, etc, to a Juror who has predetermined/ "God supplied ideas (???) or opinions regarding a court Case imo.
God/s/Religions have NO place in Courts Human of Justice.

Yes, it is legal to nix this juror. The reason is that he plainly had his mind made up in advance.

If any prospective jurors indicate that they will reject all legal evidence, and rely on what they believe their god has told them, they have disqualified themselves.
They cannot be impartial, and they cannot fulfill their oaths as jurors.

It's not that fucking hard.