This isn't a feature request to the forum but something users would willingly do on their client side! That is, with a mentality that "I don't want to be biased with my opinions despite the account being a newbie, a trusted member, or my friend" so let me just freely express what I think and the principles I stand for without any history of the accounts influencing my opinions.
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The username is our forum identity. This is a global community, hiding your identity is not a very positive thing in general.
True but to move towards a more decentralized approach we definitely need a layer to protect our identities so the commenter's opinions are not influenced by the person behind the account but by content posted by the account.
Ad Hominem attack for instance: It's problematic because it avoids engaging with the actual argument and diverts the discussion to irrelevant personal attributes.
Just the opinion that people have to know how to separate things naturally. Now, if someone can't do this alone and needs a tool to help them, it's okay to use this script.
But, I honestly think that those who naturally cannot make this separation of judgment will not use the script - at least for a long time. I say this because your inability to respond appropriately to each subject, regardless of who made the post, will unconsciously force the person to know who made the post, because only then will they be able to give a response.
Note that I think the idea is interesting and that it could be useful for some users. I just think that those who really should use the script won't.