It's simple, as a curator say I value the work of @tarazkp, his consistency, determination, content and loyalty to Hive and holding it over time. Unbeknownst to me if he was also you @cryptographic he would be at times taking 2 of my upvotes instead of the 1 I wanted to give him. Now think about this at a bigger scale, you both voting on each other constantly, votetrading with others to always autovote your and taraz' posts and suddenly there's no votes for other accounts = shitty distribution = proof of stake fails = cartel voting that's been plagueing EOS BP's for years.

Now look at @taskmaster4450 he has a known alt by almost the same name, he still gets rewarded handsomely on both and everyone is aware of it, he also puts in the work and everyone is fine with it. Had jrcornel done that there wouldn't have been a problem, but the freedom of Hive that allows for anyone, anonymous or not, to earn Hive is expected to be upfront about his uniqueness of a persona or else it'll count as a sybil attack where he's not just tricking other users to gain more for himself, but curators and other authors to earn less as well.