Is there no medium difficulty content or am I just too stupid?

[Midareyukki]

Extreme Trials are medium content.

I do agree with this. I personally see Extreme Trials as the point where you do need some coordination to go through the content, but nothing too major/savage-like. But when I said this to my friends who do play Savage and clear Ultimates, they tell me Extremes for them is on par with playing through Alliance Raids. They're too easy and they don't consider them medium at all.