You are not looking at right places. Github repo counts have been high since 2020 because there are companies & individuals who run fork scripts. So AI cant match the numbers.
But on product hunt, the amount of projects is First week of Jan: 5000+, Entire Jan 2018: 4000 approx.
This is such a stupid argument. A very significant amount of code never makes it into the public sphere. None of the code I've written professionally in the last 26 years is publicly accessible, and if someone uses a product I've written they likely don't care if it was written with the aid of an LLM or not.
Not to mention agent capabilities at the end of last year were vastly different to those at the start of the year.
Even if a portion of software is not released to the general public, you'd still expect an increase in the amount of software released to the general public.
Even if LLMs became better during the year, you'd still expect an increase in releases.
Last year was, as it seems, just a normal year in terms of global software output.