I’m not sure if he is being purposely ambiguous or not. I did not ask him, and quite frankly it doesnt matter to me one way or another.
I do believe that the following is certainly true “in order not to involve himself in the arguments”. He has his opinion, follows it, shares it with those who ask and is not concerned that there are those who disagree with him, for any reason.
As a general rule of thumb, I am automatically suspect of anyone who paskens a halacha, whether it is hilchos eruvin, shabbos, kashrus or in any other area and then feels the need to publish a kuntres and mail it to the neighborhood with justification for the psak. When I received the mailings both for and against the eruv last winter I put everything in shaimos (I suspect I could have put it in the trash to) and then signed up for all sorts of mass mailings to be sent to the return addresses on both mailings. You send me spam, I will arrange to have it sent back to you.