Actually, the carrier does drop the full amount. The friction "stop" is the nose of the carrier that is held at a slightly higher angle to allow the top shell to feed into the chamber. If any pressure is applied to the forward end of the shell, the crimped end will drop and will not feed into the chamber, jamming the action. On the models we looked at, this feature was present. It did not make the gun operate reliably unless the proper feeding technique was followed.
After a slight bit of wear, which happens inevitably with the soft Chinese parts, even this feature is pretty well defeated, leaving the user with the same performance as an original without this "stop".
Now, if there is substantial change to the carrier to prevent this behavior, then Coyote may have gone too far with his mod. A current example would need to be examined to verify this one way or the other.