Fascinating, I don't think that the method is inherently unsafe, over the years many ways have been adopted to hold the wood against the cutter and feeding from right to left there's little or no chance of the wood kicking back, I've certainly never experienced it. Now table saws, that's a whole different ball game.
Thanks, Harry- Your table saw remark reminds me of one of my earliest experiences using the router table. One of my first projects was to make a low step stool to help my aged mother in law to get in and out of the shower. I had no experience using my newly acquired router table, but had used a table saw a bit and knew that when crosscutting, one never does so with the stock against the fence during the cut. I needed to cut a dado for the legs of the stool to fit into the top, so, using the table saw analogy, set up the fence in the router table with a spacer block and attempted to make the cut using the miter gauge which came with the router table, just like one would do on the table saw. Well, you can imagine the result, the bit grabbed the stock as I made the cut and I ended up with a nice "ess" shaped dado. By the time I realized what had happened, it was too late and the top was ruined. The second top came out a lot better. I've since learned other operations, which one routinely performs on the table saw, either shouldn't be done, or should be done entirely differently, when one switches to the router table, a consequence of the changed direction of the axis about which the cutter rotates.
Back to the question at hand. My reading of your post indicates you think that jointing can be accomplished using the technique I posted no less safely than other cuts are made on the router table. Is that fair, or amI misinterpreting your answer?
As you know, I classify myself as a beginner, and don't really know a lot, which is why I asked the question. After reading the two responses, both from persons whose opinion I respect, and who came to opposite conclusions, I'm still unsure, but I certainly appreciate you and Bobj3 taking the time to look at it.