Phrased differently,
From a religous perspective some things are good. Some things are neither good nor bad. Some things are bad.
Now, let’s examine the issue of TV.
How many Yidden have had their Yiras Shomayim improve because they have a TV in their home?
Zero.
How many Yidden have had their Yiras Shomayim diminish because they have a TV in their home?
(Tens or hundreds of)Thousands.
Whether you like it or not, that qualifies it as a “spiritual pollutant” & for the Gedolim to express their position that it should be “eliminated from our homes” is not “a bit much” rather an expression of their concern for your spiritual welfare, for which you should be eternally grateful.