It isn't exactly a new thing this expansion, Endwalker absolutely already suffered from too much VFX clutter. They've increasingly relied on flash over substance and the ridiculous amounts of particle effects are part of this.
And it isn't just limited to bosses. In an attempt to make job abilities look more interesting than they actually are they plastered giant VFX vomit all over them as well.
Take Warrior for example, I actually like Primal Wrath as a mechanic but good lord is the giant molten lava slam from it and Primal Ruination obnoxious visually.
