I remember reading a pamphlet entitled, "Merely a Matter of Preference" that asked the question, is tradition merely a matter of what one personally prefers?
Ultimately, one has to ask the question whether the pagentry of tradition, the smoke of the incense, the ringing of the bells, the genuflections, the beauty of the priestly vestments, the altar boys, etc., are all that really matter. Is this just what I prefer? Or is tradition more than that?
If it is all just a matter of preference, and my local priest offers a nice conservative Mass, maybe he even chants part of it, and the choir sounds beautiful, the church isn't decorated with hundreds of politically correct felt banners, no rainbows adorning the sanctuary, etc., why is the traditional Mass important. Why, especially, if the Novus Ordo and all that comes with it is valid, holy and pleasing to God and is His will?
Most people I know who once attended the Novus Ordo came to tradition, whether through the SSPX or other traditional priests, for more reasons than they just liked it better. Even many people who attend an FSSP Mass do so for more than just personal preference and many of them have told me that they wished for an SSPX chapel in the area.
So, the question to be answered here is whether it really matters. Bishop Fellay seems to be saying that it really doesn't. So I have to wonder why I should go out of my way to attend his society's Mass.