Or maybe they got to a point where they were throwing too much good money at a bad station. They have lots of licenses, and thinning the herd is sometimes a good idea.
I still think that if they had originally moved from Paxton to Hudson instead of to W. Boylston, that they may have spent around the same amount of money for a significantly better result in greater Boston when they were motivated to do it. I don't know whether they just didn't think of that back then, or if there was a reason making it not logistically possible that is no longer in play.
I think W. Boylston seems to look a lot better "on paper", or even visually when you see that tall tower along Route 290 with the white flashing lights at night, than it actually effectively is as a site to rimshot Boston. On TV, Ch. 66 from Hudson (and now Ch. 68, and subchannels 50 and 58) always came in better in the Boston area than Ch. 27 from W. Boylston ever did.