Yep! Human nature doesn't change from year to year. Early filers are most always early filers. Late filers are mostly late filers.
And if the filing dates were changed to allow more time, the last minute filers would sill be last minute filers.
When extensions that were only allowed to Aug 15, were changed to Oct 15, we tried to keep this info from the late filers and it worked for a uear or two, until they found out about it. So, you all know what happened. The Aug filers now became Oct filers, even with two additional months allowed.