I have seen bang bang plays ruled fumbles (because of "football moves")

[JonLP24]

24. Complete history of the NFL's dumb catch rule confusing people

The 2015 season has been defined by the NFL's controversial rule for determining whether a catch was made and there have already been several calls cast into the spotlight. It's certainly not a new issue and was really cast into the spotlight in 2010 when a would-be touchdown reception for Calvin Johnson of the Detroit Lions was overturned and ruled incomplete.

Since then, big moments like Dallas Cowboys wide receiver Dez Bryant in the 2014 postseason against the Green Bay Packers, have caused many to call for a change to a confusing rule. And it has been changed, but never substantially.

Prior to the 2015 season, the rule was clarified to remove the words "football move" from the catch rule, but it was a matter of semantics that didn't change much about the actual content of the rule. Here's how the NFL clarified the catch rule in March 2015:

In order to complete a catch, a receiver must clearly become a runner. He does that by gaining control of the ball, touching both feet down and then, after the second foot is down, having the ball long enough to clearly become a runner, which is defined as the ability to ward off or protect himself from impending contact. If, before becoming a runner, a receiver falls to the ground in an attempt to make a catch, he must maintain control of the ball after contacting the ground. If he loses control of the ball after contacting the ground and the ball touches the ground before he regains control, the pass is incomplete. Reaching the ball out before becoming a runner will not trump the requirement to hold onto the ball when you land. When you are attempting to complete a catch, you must put the ball away or protect the ball so it does not come loose.

https://www.sbnation.com/platform/amp/nfl/2015/11/20/9746130/nfl-catch-rule-controversies-calvin-johnson-referees?__twitter_impression=true

I have seen receivers that make a catch are popped but because they are quick they made a couple of "football moves" it is a fumble but reaching is control but that movement plus the right hand was under the ball too if he didn't try to reach it would be a catch. Why wouldn't it be a fumble he recovered?

control, two feet and have the ball long enough to perform an act common to the game." Why can't reaching into the end zone be considered an act common in the game? It should be a catch by that point.