Isekai Universe which focus on Unique & Generic setting of Both Era of Isekai

I have an Isekai Webnovel which focuses on the Unique & Generic setting of Isekai from Both Era which has a plot that is basically generic isekai goddess have to plan to terraformed various earth analog like setting from every universe to be just standard medieval fantasy under request of NEET & Hikkikomori to get isekai there to get wish fulfillment where they can be something they want and they will not isekai there until there is Generic Medieval Fantasy setting while older Outworlder who love the uniqueness of pre-SAO Isekai is got send there to protect their world from Isekai Goddess who want to terraform every world into the same world

How Will People who lives in world with a unique setting such as Sugar Bowl Apocalypse similar to Adventure Time as well as Dark Fantasy setting similar to Dark Souls think and reacted when their world starts to turn generic due intervention of some generic isekai goddess

which I focus on conflict between Unique Setting of Pre-SAO Isekai & Generic Setting of Post-SAO Isekai