They were just trying to make Dale Jr feel right at home
Seriously though, this is going to hurt these two teams somewhat in the points standings, but not so much in the long run. It's not like either team is in much danger of missing the Chase because of anything NASCAR is likely to do about this. No matter how much of a points lead Jeff Gordon would build would be reduced to 5 freaking points after race 26 anyway. Thanks to NASCAR's contrived playoff or "chase for the championship" as they call it, there is no longer much reward for dominating the entire season as the old champions did. Jeff could win every one of the next 10 races or so and it wouldn't mean anything when the playoff starts.
In summary, yes it sucks but it isn't nearly the end of the world. Jeff and Jimmie will be fine.