I tend to agree with your position here regarding ESPN.
You do fail to mention the positive, albeit slow, ratings growth the EPL has brought to NBCSN. Smart and savvy pick up by them.
FS1 is predominantly garbage, but they really don't play "d-list soccer" tournaments. They have Champions League, Europa League and many of the smaller league cups in England. While the latter doesn't move the needle, I can't argue with the strategy given they acquired the broadcast rights for the next couple World Cups. Smart long term plan IMO.