I understand how you see that the issue with AFK cloaking is the cyno.
Because of a cyno a single ship can become many within seconds. There is counterplay against covert gameplay though:
you can bait them. (Let me get back at that later.)
The issue that ‘AFK cloaking’ posed for many years is that baiting doesn’t work. To properly bait you need a response fleet strong enough to take on the people you are baiting. But what if the person you are trying to bait isn’t actually playing, but is asleep for the past 5 hours? That’s a complete waste of time for everyone in the response fleet while baiting.
This results in very skewed unfair gameplay in favour of the person who can cloak AFK in a system to put pressure on it without any reasonable way to deal with it.
… until CCP added mobile observatories.
With mobile observatories players who wish to cloaky camp a system need to be paying attention or lose their ship, which stopped AFK cloaky camping campaigns. People still try to AFK cloaky camp sometimes, but once the defenders bring mobile observatories and probes a few times there’s little reason to continue doing so AFK, because they’re all going to be flushed out in an hour or two of not paying attention.
So the only effective way to camp systems nowadays is by paying a minimum amount of attention.
The good part about cloaky campers that pay attention is that you can bait them.
A strategy that is unreasonable to be expected from players against AFK players is a lot more reasonable when you know the cloaky pilot is looking at the screen at least once every 15 minutes - they can see your bait!
For example, put out a nice Kronos, have a bunch of allies ready and you can bait that cloaky hunter with cyno to engage your ship and even kill a Redeemer in response.
(Yes, I noticed your reddit thread a couple of days ago and really enjoyed the story.)
Really good job, and that’s how it’s supposed to be.
You flush out active cloaky players by baiting.
And you flush out the AFK cloaky campers with mobile observatories.
In the old days the second option wasn’t there, so AFK cloaky players were an issue as baiting was not an option when you never know whether the cloaky was AFK or not.
Not anymore: if someone manages to consistently avoid your mobile observatory you know they’re paying attention and can see your bait. If they’re not taking the bait, bring better bait.
In other words, AFK cloaking is no longer an uncounterable issue.