The standard of evidence I'm applying is simply that evidence for X being true must not also be plainly compatible with X being false.
Here, for instance, is some evidence that meets that standard, from that very same article you love:
> He found a near-constant rate—1,000 every 10 minutes—punctuated by periods of zero comments, as if web robots were turning on and off. He determined many were from hacked accounts.
This pattern is either server-side (e.g., a server-side rate limit and an extremely flaky server) or client-side. If it's server-side, we'd expect to find it independent of the contents of the comment, we'd expect to have stories of people being unable to submit comments, etc. Unless we have those stories, then this pattern is plainly incompatible with actual humans submitting comments, even with the aid of some automation or pre-written letters. That is evidence that these comments were almost certainly not from actual humans.
No similarly strong evidence exists on the pro-net-neutrality side. "A bunch of comments claimed an address from Russia" is certainly suspicious and weird, I agree, but it is not plainly incompatible with humans (if it's IP address, bad geolocation; if it's e-mail address, Russian-run mail provider whose accounts are used by Americans; etc.). I am happy to grant with more detail about what's is meant there - which neither the FCC nor the WSJ has provided to us - there may be strong evidence, but it's not there yet with what you've posted.
If you want to revise your initial complaint to "Friendly reminder that some weak evidence exists in favor of small, isolated bot campaigns on the pro-network neutrality side and very large bot campaigns on the anti-network neutrality side, such that if all suspicious comments were disregarded in proportion to their likely untrustworthiness, the overwhelming weight of public sentiment as measured by this exercise would be firmly on the pro-network-neutrality side," then I have no remaining objection.