Anecdata is a humorous term for "anecdotal evidence", i.e. it is not real "data".
I think the problem he has with the word is data is the plural(!) for singular datum. So one data is datum, two cactuses are cacti, and two datas is data. Maybe not always colloquially but technically. Hence anecdatum and anecdata.
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by seatsniffer on Thursday August 31, 2023 @10:21AM
(#37337582)
It depends on where you are. In the US it's like you say. But in the UK for example they will often use data as singular.
Somewhat surprisingly to me, "anecdatum" has apparently never yet appeared in print [0], and I'm happy for the two of us to share credit in coining it.
[0] https://books.google.com/ngrams/graph?content=anecdatum