Otherwise we really should all start writing response articles and post those instead of comments, because there are only positives yeah? 70 comments for this post alone, all articles so people can use their own variant of formatting languages or whatever
However, this is a topic that's not frequently discussed and lots of room for argument.
The last paragraph in the OP rhetorically mocks that idea. Boycotting GitHub would negatively impact said projects since there is no competitior as robust, which is a worse outcome.
2. Mark GitHub repo as "Mirror Only"
3. Unsubscribe from all GitHub Issues and notifications (see 2.)
4. No more low-effort spam, only the occassional medium-high effort questions and issue reports. Sweet relief!
If the choice was between piece of mind and stars on GitHub, I think I'd take the first.