Why not? That's kind of the whole point of having accounts here on HN. To create an environment where folks can discuss stuff in good faith. Posting history is public because the posts were public in the first place and they represent who you are (or present yourself to be) on the site.
It allows each of us to be authentically 'us'. Do you not stand by the things you've posted in the past four plus years?
If you do, why do you care if people are looking at your posting history?
If you don't stand by what you've written here in the past, you're likely not posting in good faith.
Either way, why are you concerned about folks looking at the stuff you've publicly posted in the past?
Instead, I have been focusing my efforts on tracking DOGE's staffing in agencies and their activities and system access there. DOGE has not been transparent at all. Rather, they have abused the Vacancies Act and government detailing to hide their activities and skirt many of the laws around government ethics, privacy and data security in the process. And they have been doing a lot of damage in the process, claiming to be doing "IT Modernization" but doing many things outside of the scope of the Executive Order that established them and also the separation of powers that gives Congress the power over appropriations.