yes, is the short answer. i am a upc plumber. the ipc drawing you have. altho code correct. if the vent is rolled, goes against everything i was taught
it is my understanding, that it was adopted, due to structursal restraints. and or difficult roughing in situations when the correct fall can not be achieved stacking the fittings.
so that said. can you add a vent or 2, that toilet will pump and the shower will gurgle. it wont happen today. but down the road
when the pipes no longer scour them selves and you get a little build up. on the walls of the pipe. the router rooter man will be your bestest friend. others will disagree or not