Not necessarily. You can see in the Warren pics that the plane gets separated from the main contrail by a fairly large distance.
And keep in mind what he's actually saying. He isn't saying that the smaller contrail isn't there (though he thinks it's not new contrail but rather a piece of the main contrail), just that the plane itself isn't visible at the tip of it. In that sense he is correct. It is too small to see. But it is there, as is evidenced by the small contrail it is making.
As he said, if it was getting closer it would get bigger.
True, when things get closer to you they get bigger. But it does not follow that within that span of time it got big enough for the camera to see.
Here is where Rick Warren has it at 5:23.
In just 8 more minutes (only about 66 miles closer @ 500 mph) UPS902 would be directly over Santa Catalina Island (absolutely confirmed by flightaware and Airport Monitor) which is about 25 miles from LA harbor. That's close enough to see an airplane distinctly with the unaided eye yet you are contending it couldn't be seen 66 miles further out with a very high-powered zoom lens?
You are exactly right, see post #107.