Follow
Just to give you an idea of how "precautionary approach" is supposed to operate - imagine someone raises a "valid concern" like this:
Is there evidence of safety of Mastodon and other federated social networks? If there's no evidence of safety, we shouldn't probably be using them, because they could be potentially unsafe. For example, there might be an increased suicide rate associated with use of federated social networks, and nobody has proven that there isn't.