Well, for full discolusre, I'm not A JC fan.
But the O-Line has to give him more time.
Time to look over the field.
Time to get the ball off.
If they do and he still can't find the open receiver and then hit them in stride, he's out of the league within two years.
As to "He has a new system:
This is how it is in the modern NFL. Coordinators and coaches (and receivers, centers, etc) come and go regularly.
Pro players adapt to change or they aren't pro player for long.
JC is the qb this year, for good or bad.
Colt-45 won't be ready for two years.
The most important thing we can do now is not attack each other personally, but try to make our points.
J-Dawg