While it may not seem like casual content got harder, it definitely became faster and a bit more chaotic. You now have to press your buttons while paying attention to ongoing AOEs, the castbar, and the environment more than in the previous expansion. In my opinion, this is a noticeable change.
While it may not seem very different for people who do harder content, it is a step up from the usual brain-dead fights and is definitely the right direction moving forward.
If casual content suddenly had a huge difficulty spike, many subscribers would leave in frustration.
