I find this line of thinking frustrating and dismissive of new(er) technology. Is "blockchain" necessary for anything? Probably not. Is it potentially the best solution when compared to the alternatives and weighed on its pros and cons? Maybe - but one has to be willing to investigate before dismissing it.
Don't get me wrong, there are definitely areas where blockchain tech is (or may be) a good solution. Those are for problems where distributed trust and consensus between (potentially) adversarial agents is necessary; where a central authority either doesn't exist, or can't be trusted.
In this situation, you are downloading code from a central authority, and have placed your trust there already. What benefit does a distributed solution give here?
