Understandable, and yet if nobody contributes upvotes out of the same concern you end up with nothing standing out in your feed to come comment on. Kind of circular.
On the other hand having an upvote actually attached to your (and I actually mean your handle here) name would likely give it credibility in a weird sense. There's much less incentive to blindly upvote if it essentially shows what you saw like a slug trail, but if you're selectively giving oxygen to the best of what you see then that trail is valuable to others who value you. It's a functional change from competing to push things for their own sake.
Im old! I come from an era where there was no such thing as OPSEC as soon as you interact with another party you cant personally name. For every consumer that was the phone company, or literally right out the door. If you transmit (login credentials, personal info, search queries) the expectation is somewhere, someone or something is logging it. Not even maliciously all the time either, sometimes I got to some of this out of boredom. The corporate Internet just kind of acts like a middle man, because that same problem never went away, just siloed into companies.
Until we get to a future like Transmetropolitan where the expectation is your online presence has some dirty laundry (and hopefully leave out the other stuff), all the bits/bytes, not just upvotes, you transmit should have a limited expectation of privacy. This is just the best/latest reminder because every hack is the same problem, only the company has incentive to keep it quiet so it doesn't hit their bottom line.
Isn't the key operating word here business?
With no advertising on the line and no operations currently in place operating at anything but a loss there isn't a commercial interest at stake.