Being anal but there are inaccuracies from my point of view in their explanation.
It's undoubtedly true that changing too much murks the waters on evaluating gameplay, but pistols and rifles are completely different things. Also (1) the update has been out too little to allow people to adjust to new mechanics, even if they were on the spot (2) of course that people are still spraying if the inaccuracy of rifles has backfired contrary to their expected result!
From what I read seems to me they should have rolled back only one of the two settings, probably rifles that seem to be more affected, while pistols people were saying was the correct direction(?)
Also stuff like timers sound very intuitive that increasing both, the update nullifies the other.
But yeah, like I was saying some posts ago, it's clear that they are adjusting the game on the big mass of casual players rather than pros. And I'll throw it out there: I don't see why tournaments shouldn't change settings like timers. Eg. for ages in international basketball tournaments Americans had to adapt to a longer shoot time. So if pro tournament organizers don't like the round timer, they should be enabled to change to cater to the experience they want to have.