Sometimes, you have to factor when you're reading or hearing information.
Few months ago, Mobile Orders were really bad and you had hours long waits after you click on "I'm Here" button to pick up the order. Although in recent weeks/months, doing Mobile Ordering has gotten better.
When I was there 2 weeks ago, I did mobile ordering for Hungry Bear, Mint Julep Bar and Pym's Test Kitchen early on the morning. Just so that we could secure the time slots we wanted for our meals. Those Mobile Orders worked great and either my food was immediately ready for pickup or I only waited less than 5 minutes.
Then at Docking Bay 7, I was going to do a Mobile Order for their Cold Brew Coffee but I saw the Mobile order area had about 15 people waiting for pickups. Then when I went to check on the Stand-by line, there was only one person there. So I figured I'd be faster to do Stand-by.
So it's really a wait and see. Remember, your credit card does not get charged till you click on the "I'm Here" button for the pickup of the food. So if you see the Stand-by wait is shorter, feel free to cancel the Mobile Order and go with Stand-by.