The only "serious problem" is you trying to use Google trends to prove things. Stop. Please.It has an audience that is clearly declining dramatically. The google trends bump for this expansion was the smallest for any expansion, and the falloff after has been equally unprecedented.
Wow classic is now outperforming shadowlands nearly 2:1 in trends. As of this month FF14 has basically caught up despite FF14 being at the end of an expansion and wow just releasing one a few months ago.
There’s a serious problem here, and the issue is not people who wish the game to fail. The issue is the people that refuse to recognize how badly it is failing. The game is going to lose resources, and likely already has. Huge delays between patches is going to become the norm, smaller expansions are going to be the norm, and the people sitting around declaring wow is always king and wow can’t fail and everything is fine are going to be very confused.