I don't know what Samuel's reasons were yet, but for myself, I pretty much quit blogging when I began to question whether I was working at cross-purposes with +BW and +BZ (i.e., I was trying to grow a new SSPX movement, whereas +BW wanted no replacement or large movement and was encouraging independence, while +BZ was wanting to remain invisible).
You are misrepresenting and distorting the position of the two bishops in question.
When has +W ever said he wanted no large movement?
Being negative on "another SSPX" is humanly understandable for someone almost 80 years of age who has given decades of his life to the cause ... with the current results. If I were him, I would probably be living in a hermitage somewhere, having completely given up on Trads. At least His Excellency has decided to help the small remnant as much as possible, and has done a good job and provided Tradition with 3 more faithful bishops.
+ABL had a lot more to hope for, and a lot more to work with, at age 79 than +W does today. +ABL was 79 years old in 1984. And remember +ABL himself was humanly discouraged, angry, and ready to give up on America after the Nine split in 1983, but Bishop Williamson convinced him to maintain a presence in America and rebuild. So it's not like he's always been negative. If anything, he's historically been too optimistic and quick to give people the benefit of the doubt.