My individual opinion is (presumably) not unique. They also absolutely can tell who is a decision maker: around 2015, people used to serve facebook ads specifically to VCs to get investment in their startups. I'm sure targeting has only improved.

This doesn’t make sense as a reply, it’s not relevant how many others share your opinion, because it’s not aggregations of people replying to each other on HN, but specific users.

Each user’s comment has to stand up under its own weight so to speak