That is what I thought early in my career but I changed after playing Hobart. They had one foot splits and ran the ball well. I changed my offense and did the same thing giving my blockers easier options for double teams and to fill gaps when we can counter plays. Spacing yourself out is a risky thing but as long as you don't split out more than you can down block you can help yourself. For example, I saw a game film of IU playing Nebraska back in the early nineties. I had to run the film back a couple of times as their center reached the IU tackle, IU was playing a 5-2 with tackles on offensive tackles. It was unbelievable Nebraska could pull their guard with the OT reaching for the DE and the center reaching the DT for IU. I never had players that good so I went to closer splits as I wanted to drive the DL off the LOS.
This gets into a complicated topic as you look at different offensive schemes that determine different splits to help the offense.