I guess the way you abstracted will probably reduce your privacy (a tiny bit). At least I have not seen anybody write "<X>" instead of just X in this usecase.
So either this is very specific to you, or is very common in your circles so you do it too. Both of which reduce the number of potential candidate if somebody tries to doxx you.
Additional you (or your editor) uses “” over " which also reduces the number of candidates.
(Not trying to attack you here, just thought it was notable)
Iirc word histograms almost uniquely identify authors. Of course this is on larger amounts of text, but I guess you could identify users over seperate platforms this way.
E.g. Intend to use ellipsis (...) to separate thoughts in online conversation a lot. But I try to not do that in reddit, where I try to stay somewhat anonymous.
Still, I assume that it would be possible to correlate my reddit and HN account just by comparing the word histograms (ie which words I use and how often).
Sounds far fetched, but it's really not that hard. Quite recently somebody hacked this for correlating HN accounts with each other and found alt accounts of people with high accuracy. Which people confirmed. And that wasn't even a serious attempt, just a little hack on a sunday night.
In a sense, it's all too late now since all your writing is already out there. But could be good to know for the future.
Or, as I do, consider everything posted to HN to be linked to me. My handle is actually an abbreviation of my full name. I consider HN to be "professional" correspondence.
(As a complete aside, that program of study also included Forensic Linguistics which truly fascinating. And of course the work of Claude Shannon and information theory, though not in any great depth)
I know that the site guidelines discourage that, but what can you do.