Well yeah, we knew that, DUH.
The new twist is that Steve’s dad (Jim!) has some genetic condition, and maybe Steve, and thus his two future babies have it, but when Leanne and Nick asked if he was going to have a test so they’d know, he was like NO I WON’T AND YOU CAN’T MAKE ME. Like, what? Nick has total blackmail power over him, so Steve’s in no place to throw his weight around. Just seemed really weird and out of place.