Is Reb Yaakov going to go to gehenom because he watched the moon-landing? Will the Chofetz Chaim Heritage Foundation go to gehenom because they show videos on Tisha B’av. It is not television per se that is the problem, but the culture that one may absorb if one is not careful. Same with walking down the streets of NYC. I do not recommend watching bimbo shows, or say that relaxing in front of a TV every night for 5 hours is proper. However, to deny that there are very valuable educational uses for a TV every so often, or even to give a child a treat for getting good marks, and let him watch a world series or super bowl (without commercials) is also incorrect in my eyes. Not all of us follow the hashkafa that everything in the outside world is treif.
Many of the Rabbonim cited in that list hold that all college (or even high school in EY) is assur and that the Medinah is treif, etc. It is a particular hashkafa that works for some people, and many of those in the list are the proponents of it. But there are many Rabbonim who feel otherwise, and do not hold that everything in the outside world is bad, rather, there are positive things that the non-Jewish or non-religious world has accomplished that we can benefit from.