You're welcome to create throwaways where appropriate. But in doing what you're doing, you're very likely making it more difficult for those with a legitimate need to do similarly to do so.
HN is a community. It's totally fine not to use your real name, but users do need some identity for others to relate to. Otherwise we may as well have no usernames and no community, and that would be a different kind of forum. https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme...
Websites like Reddit Profile (https://redditprofile.com/about) and HN Profile (https://hnprofile.com) systematically scans all HN comments and identifies all users' expertise, personal interests, activities and emotions, and allow employers to uncover their E-mails and hire them. And it's just a one-man's startup as a social experiment, larger agencies and corporations have at least many order-of-magnitude higher budgets. And I definitely think not everyone wants that.
The problem, I think, is this type of behavior encourages inappropriate uses and abuses of anonymity.