Questioning the conclusions that scientists before you have reached is something that is good to do if you have the tools to do your own primary research and publish your own study. If you don't have the tools to do your own study, looking at the hundreds of papers out there in peer-reviewed journals (peer-reviewed meaning multiple independent teams of scientists did the experiment as described and got the same result the authors did) all showing the same results are about as good as you can get. If you don't trust Big Science, just look around you. Take for example the question of whether the vaccine is safe to get. A common argument I heard was that people didn't want to be guinea pigs, which would have been fair were it not for the fact that half the global population had already gotten it and less than 1% had any ill effects. As for whether it protects people from the virus, one need look no further than the endless stories from healthcare workers about the people they kept alive. All of the life threatening cases were from people who hadn't gotten the shot.
Acting as though the conclusions scientists before you have reached are false because a podcast you follow said they were, without supplying any data to suggest such a thing, is a wholesale rejection of the scientific method.
The person you replied to never said anything about Parler itself, let alone whether platforms that don't follow the popular consensus should exist. That is unambiguously good. What they said was that the people who run Parler are fascist bootlickers, which, now that Trump has said in as many words that he plans to be a dictator, is true of anyone who still supports him.
Can't help but notice your response didn't address the piracy issue. Can I assume we agree on that?