I was ninja'd like 10 times so
I think the numbers came from that really old 2009 list of ratios; even if we were to take the averages (linear or logarithmic) instead of the thresholds, 3-5 UC still roughly equals 1 R with those numbers.
Using the threshold ratios of pet:users and with rough numbers-
1 UC was 1:5.5
1 R was 1:25
so 4.5 UC = 1 R
Using the linear averages:
1 UC was from 1:5.5 to 1:25, so the average UC was 1:15
1 R was from 1:25 to 1:80, so the average R was 1:53
so 3.5 UC = 1 R
Using the.... logarithmic averages??? Exponential averages?????? I don't even know if this is a valid thing, but based on the thresholds, I'm inclined to believe that pet rarities are not distributed evenly on a linear number line, so IF that's the case and pets' rarities on a linear number line are more sparse as the rarity increases:
1 UC was from 1:5.5 to 1:25, so the average UC was 1:14
1 R was from 1:25 to 1:80, so the average R was 1:40
so 3 UC = 1 R (more like 2.85 UC = 1 R)
Please see
this graph and the notes along the side for how I got those numbers
So 3-5 UC ~ 1 R based on the 2009 numbers
The problem is that while it's realistically possible that the 2012 update didn't change the numbers and only added a new threshold below VC for OMGSC (because they finally started discounting inactive accounts and their pets with that update), I don't think it's realistically possible that this 2019 update didn't change the numbers.
In addition,
even back in 2009, Nick stated "Right now the rarities are [...]" (emphasis mine)--and since we had barely gotten the rarity system, I don't think he had any updates in mind, so I'm inclined to think that the boundaries were fluid and subject to non-human changes
From
this post and its timing, it's almost clear that the inactive/active account count is refreshed often enough (at worst: maybe like once every 3 months; at best: with every rarity update) and that the inactivity limit is roughly 13 months give or take ~2 months (so the ballpark we're talking is a year, not half a year or 2 years)
So unless Nick forgot to trigger the process of counting inactive accounts and their pets for like 3 years, I don't find it realistic that there was a drastic change in inactivity counting. I find it more plausible that the actual threshold numbers changed, especially since this phrase was in the announcement:
the range of "high" vs "low" within each label is smaller
Regarding what was said about inactivity counting in the announcement, the wording matches what I would expect of an announcer to say about the usual inactivity recounting to the general userbase, many of whom probably don't quite know what is factored into the rarity tag (if the misconceptions we've been seeing everywhere for the last half decade are any indication). Since the announcement also has an explanation of Dec 18's effect on rarity, which many of us in the thread already know about, it's not out of the question that the inactivity recounting blurb is also nothing new.
In the event that there
was a change in the inactivity counting... We don't know what it is. Maybe the threshold for activity was lowered. Maybe Nick is counting number of logins now and not just last activity or whatever it used to be. We have no idea.
With so many rarity changes, I find it a lot more plausible that the actual thresholds changed
I was going somewhere with this but I forgot where it's been 30 minutes since I started typing
Thank you for reading my very late post