> There is also zero "evidence", by this extremely restrictive standard of "evidence", for existence of any consciousness aside one's own.

Yes. That is correct.

> This rhetorical strategy thus has a weakness: who or what exactly are you trying to convince?

Ego dissolution/self realiszation takes time. It's my goal in life. But haven't achieved yet. But your comment do point that I should not waste time on engaging in things like this which builds up the ego more.