If the umpires explanation of the rule is right, the call was right. You may think it is a dumb rule at that point, but the call would be 100% right. If you watch the video Isan Diaz is way out in front of the pitch and as a lefty that usually causes a lefty to end up pretty far forward when they start to run to first. He clearly started his ‘runners lane’ in the grass, he DOES NOT run over into the grass midway to first. It also really didn’t look like he made any meaningful attempt to run into the pitcher. Isan Diaz started his lane to first in the grass and kept that same direction all the way down. You may argue he would have had to go over to touch first eventually, but he was impeded well before he got near first to do that. Again, I think it is pretty dumb the rule could call something like that interference. You just think, come in man, just not follow the rule by the book and use discretion. It reminds me of how technically a batter is required to avoid a pitch (I think) and suddenly an ump decides to call it a strike for not trying to move. BUUUUT the way the umpire described the rule, it was the correct call I guess.