That would be a bad idea as HN has a voting ring detector. If you look at my post history you'll see which Cloudflare blogs got upvoted and which went nowhere.
No, it really doesn't "prove the point." Your entire comment is violating HN guidelines[1] left and right, so of course it is getting downvoted (and flagged), but not because you've uncovered some grand conspiracy.
The cloudflare posts that get upvoted are just actually interesting to the HN target audience, myself included.
And it would have been fine, if it was you who submitted them, not the CTO, who uses HN primarily for promotion, which is something guidelines explicitly forbid [1]. But mods obviously allow corporations to violate the guidelines and it's getting pretty annoying.
[1] Please don't use HN primarily for promotion. It's ok to submit your own stuff occasionally, but the primary use of the site should be for curiosity.
We think this is by far the most accessible solution: for example, audio captchas discriminate against all the people with auditory processing difficulties as well as some visual impairment.