JW's ability to reason and think critically has never been great.
It has gotten worse because of the jw org website.
Years ago, I used to be impressed by older brothers that could pull their bible out at the door of a householder and recall, look up and explain how the gentile times are calculated. Obviously, now I realise it is BS, but it was impressive at the time.
Now, they hide behind jworg. If you have a question, they send a link to an article on jworg that may or may not answer your questions. As far as they are concerned, they have done their job.
If you don't agree, then they are not expected to spend any more time helping you, which means, they don't think about it anymore themselves.
Their deeply held, personal convictions are whatever jworg says this week.
Friendship with them is based on you having the same beliefs. This is such an arrogant basis for a friendship.
They are essentially saying, we (i) are always right about everything, therefore if you don't agree, we can't be friends and I can't talk to you. Also, it's all your fault.