Even if www.drbo.org supports the SSPX, does it really matter?
When you put it into context, to refuse patronage because of it is rather rediculous.
How do you know the person you bought your house or your car from isn’t a protestant? Or your mailman isn’t a violently anti-Catholic atheist? Or your dry-cleaner supports Joan Chittister? Or the owners of any of the stores you regularly shop in are sede-vacantists? How about other websites other than drbo.org? What about the people who run the servers those websites are on?
To put drbo’s affiliations under a microscope and criticize them and yet give everything else we use in our lives a free pass from such scrutiny is intellectually dishonest.
We’re free to spend our money or time on whatever we please, but to be as strict with every last little thing as you propose with drbo.org is impractical. We should have standards as to whom we decide to patronize, but to criticize drbo.org and still patronize other places that could have far worse beliefs or views is unfair.
I’d rather have my money or website traffic go to the SSPX than to, say, someone who supports Richard Dawkins.
To boycott drbo.org based on their affiliations means you must do the same for everything else that enjoys your patronage. You must hold the same standard for all.