Shouldn’t you be looking at a compositor, say picom?
blur-background-exclude = [
#"window_type = 'dock'",
#"window_type = 'desktop'",
#"class_g = 'URxvt'",
"class_g = 'slop'",
"class_g = 'i3status'",
"_GTK_FRAME_EXTENTS@:c",
"window_type = 'menu'",
"window_type = 'tooltip'",
"window_type = 'popup_menu'",
"window_type = 'dropdown_menu'",
"window_type = 'dock'",
"window_type = 'desktop'"
];
and probably add something here - to exclude kitty. Not 100 percent sure about Kitty