Is WTS right to insist that "true Christians" stay away from websites that debate the Bible and WT doctrine?
"Insist", no. Suggest, yes.
If they are wrong, isn't it possible that they are not spirit-directed?
Question is framed as an absolute. I do not believe that is true. Is parent always right? No, but perhaps more often than not.
Even if they are wrong, aren't you running ahead of them instead of waiting on Jehovah to reveal new light for you to come to these websites and "save us" or whatever it is you think you are doing here?
Some of us are willing to make our own decisions.
What are you trying to get at?