Once saw an experiment using reactive dye and a toilet, they flushed it with the lid up and down. When down it sprayed out the sides, when up it literally covered the whole room.

i do it cuz my weirdo cat wants to play in the gd toilet

Just turn your graphics settings down, problem solved

I feel like flushing with my big ass covering the seat minimizes particle spray about as well. The sides of the seat are vented and probably allow more airflow than my ass. Also, what's the proposed work flow here? Get up, put seat down flush, wait for agitation to stop and then lift seat up again to confirm everything went down? I can't imagine many people do this.

At one point in my childhood I had noticed that it's easier to keep the toilet brush clean if you brush while flushing. If everything goes well (not always) then by the end of the process you have both a clean toilet and a (mostly) poop free toilet brush.

I know it's contained better when you close the lid first... But the wasted potential always hurts a little.