Why are people calling it “casualbringers” now?

[SaberMaxwell]

Even if they are calling it casual bringer and the game is getting dumb down it's going to benefit SE in the long term.

Easier gameplay means more people who can play your game means more money.

While I dont agree with microtransactions, I do agree with smart marketing.

Alternatively, I could claim that watered down gameplay leaves the core userbase dissatisfied, who will themselves churn from the end product toward another more focused game. Having the core userbase churn will cause all the precious new customers to likewise churn because "Wow everybody's leaving, this must be bad."

Whatever information they have, they have a lot more data than I do. But "easier gameplay = more players" is not an associative rule you can glean from the data available to the public.