My flooring guy messed up when starting my floors. He started on one end of the room and worked towards the stairs. Now he's in a situation where the bullnose for the stairs does not properly meet with the floor. See pictures. To correct this, he says he's going to use a multitool to cut back the board to allow the bullnose to fit. Is this going to look like crap?

He's made some other mistakes too that he says he will make right. Some of these are: ~2-4 mm gaps in the seams between planks. I'm losing confidence in him. Please make me feel better about this situation.

Thanks.