I've experienced this when some of my personal projects made it on HN and Reddit. While they were 90% positive experiences, it was also a lesson in patience to refrain from correcting people who made drive-by criticisms and assumptions that were factually wrong, which they'd know if they had worked in the same domains the projects exist in or had read the READMEs.

Even then, those were good experiences, because it let me appreciate and discern between constructive criticism and criticism from those who don't really care and just want to complain on the internet.