Earlier quoted context omitted.
I’ll take my chances. 99%of the people I want to talk to either email/text me first or are already in my contacts list (which I’m not really all that picky about). I’ll accept that failure rate.
Isn't "emailing you first" just kicking the can down the road? What stops spam emails getting through to you? (Besides the exact kind of heuristic filtering you seem to be objecting to, that is.)
The disadvantage of email is that it doesn't work for urgent use cases, like Disneyland calling the parent of a lost child.