- Op.gg and other stat sites don't post flash win rates, and nor are any champ's daily values based on instantaneous feedback. They usually use the last 7 days.
There are many other variables which are playing just as a relevant effect on loss rates :
-End of Season rushers/desperation/smurfs who are trolling lower elos more frequently.
-Galio being released but NOT retracted or disabled, with a skill that can 1 hit a 2400 hp champ who actually has 200 Mag resist..... without even having a Void Staff. (I actually built a 200 mag resist Miss fortune to 2400 hp and ONE TIME Galio caught me in his Q, and erased me in 1 sec).
- For what it's worth, I knew support pre Censer. I've actually never cared about rushing it, because it puts supports behind about 1200g. Yet, I've won a lot as support.
What actually feels like it's changed:
Adc's don't know how to carry without a Censer, and make far more mistakes vs champs that are overtuned like Draven or Jhin or Kalista, leaving the support to suffer along with them. When an adc fails, the support is going to usually be behind 2-3k in gold from where they should be as collateral damage from not having an adc.
There's also far more troll support picks happening. Veigar support is on the rise. I've seen actual Ahri supports in ranked, Ryze supports, More brand supports. Galio spam. Ezreal supports.
Less people are actually using supports and more are using carries.
At the same time, Sona, and other supports that were nerfed because of Censer being part of their kit, have not been adjusted, and still are doing far lower damage than they used to.
For example, I used to do about 24k damage with Sona and 18-19k damage with a Nami in a ranked game. Now, I'm lucky to hit 10k, because 1) I have to go coin to be competitive, reducing damage/AP, and 2) Their heal base got nerfed along with damage base to accommodate Censer changes.
Furthermore, Adcs and supports just can't keep up with Duskblade anymore without Censer. Too many stealth champs have multi proc on it, and the ward detection is OP. It dismantles a support's secondary purpose, feeds the stealth champ free gold,
Btw; Leona's Baseline and Blitz's Q and ult were all buffed during the Censer meta. Now, they are still strong, whlle other champs get punished for getting pulled once in 12 pulls enough to make it like the 11 misses never happened.