Its easier for an LLM to find vulnerabilities in a project with less usage, and those vulnerabilities will stay open longer, making them much cheaper to attack to keep the door open.
Do you think Netanyahu, Trump or Xi-Jinping are somehow secretly using Cosmic DE at home, to be worthy targets?
Bad actors have limited time, lives of their own and mouths to feed as well, so they concentrate their efforts where "the fish are" if they want to PWN someone for profit.
That's why Windows was the biggest target in the past for so long and why MacOS and Linux were ignored. Because most of the fish were on Windows.
Previously, time was the most precious resource. Now its tokens, and more cheaply at at.
If you assume Mossad and NSA are Token-maxxing every single niche FOSS project out there to cast as large as possible fishnet on hacking all Average Joes on the planet just in case, then maybe using Mozilla and MacOS gets you hacked too, maybe even visiting HN and commenting here gets you hacked by some zero days you don't yet know.
Where does this open-ended paranoia argument end?