Err, no its not opinion. We are simply looking at two separate things. One is censorship - that is, the omission of salient facts or opinions. Censorship is “you don’t get to mention that or talk about that”. Whereas a rule about needing to provide a balanced set of views is that you can present whatever political view you want, provided you also give air time to the other views. So it is not censoring anything, The rule is simply obliging the broadcaster to also show the different political perspectives.
If you can demonstrate that this rule is in effect censorship (that is it is preventing certain views from being aired) then let’s chat about that. But as these evidently are two separate things then you are going to have to accept that this is not my opinion. It is simply setting out what these two separate things are.