@smmenen Waaaait a minute here, Steven.
You've been all over people (like me!) who mis-use the term "Power Level Errata" in the past. Now you're mis-using it? Shame on you, brah.
Power-level errata, as the School of Menedian taught me, means issuing errata to change card text for the express purpose of reducing its power level. Now, usually it's misapplied by people who apply it to a change that is justified by original intent or original function but has the practical effect of reducing power level.
It seems like you're doing the same thing, but abusing a different part of the definition. Wizards is not issuing errata for card text like they did in the Power Level Errata era. Instead, they're changing rules. This is something that happens all the time. Hell, remember the Mulligan rule changes? Remember that cluster? Damage on the stack? Lotus-freaking-Vale? Rules changes are not the same thing as card errata and you know this.
I think the calm version of what I'm trying to say is that it's alarming to me to see someone who has always been so calm and clinical about the application of errata policy essentially break out the pitchforks over this one.