Why are you upset that people want to be able to get gear via other means? And one big reason why an ease of access for gear is good, is that it helps people get into raiding/mythic+ if they either start late, or change classes. The system of "You can only get gear via raiding or mythic+" is inherently flawed in that it doesnt take long that you need the exact mythic+ and raiding gear to mythic+ or raid in the first place.
Just sounds like the new system will be worse by removing the option to get material from the world and instead stick it to only raids and mythic+ (according to Ion)