Sure you would probably treat it differently but isn't it being elitist and harmful to the open source community in general to outright shoot down or discourage any PR from a lesser known or unknown source if it is a good PR? I think we should encourage novices to contribute and we shouldn't be hostile to them so that they can get past the novice phase and become trusted contributors. If a bot produces valid helpful and well formed PRs, why would you discriminate against them completely when they improve your codebase?