You do you (no downvote for me), but abrasiveness doesn't help build community support in general, and context matters a lot.

In the context of some random user demanding a niche feature be added to a free project to suit their needs: abrasiveness warranted.

In the context here, of a security researcher very politely notifying them of a bug critical to the focus of their project (security and privacy), attempting private channels first, providijg deep details of the issue, adding discussion notes regarding upstream provider being unlikely to fix, and even including code to fix the problem for them - abrasiveness is counter-productive.