From before the foundations of the world...

[Paul Younan]

Andrew and I are playing two roles. He is the communicator.....(snip)

Yes, he is playing the communicator role. And he is more than qualified to do so. You, however have taken it upon yourself to play the role of forum debunker. We have over the years experienced this phenomenon quite often: some know-it-all (who doesn't) comes along, and employs some (or all) of the following classic trademarks:

#1) They never post anything original.
#2) They snipe at all credible posts.
#3) They find the most innocuous part of the post to attack and forget the rest.
#4) IMPORTANT: the following words must be used as frequently as feasible; "likely" and "possible".
#5) They demand credentials, although they don't have any.
#6) They never address the evidence, nor do they offer any of their own.
#7) If they have to respond to a fact or two, then they acknowledge them and move on to something else as quick as possible.
#8) They attack the person.
#9) They play the role of Devil's Advocate.
#10) Last but not least, they pretend they are really trying to seek the truth.

I hate to be the one to break it to you, but it's not YOU that Andrew or I may be addressing. It's not YOU that we may be trying to "convince." Many times we are bouncing ideas off of one another, or perhaps we are adding to our arsenal of evidence for future reference.

Playing the role of debunker is fine: as long as you are at least somewhat fluent in the subject matter at hand. The ability to present evidence to back up your objections may help your cause as well.

Or is this about friendship and loyalty?

I'm not going to grace that with an answer.