But I do see a point in having the chair say (or display) in the room, "Just in case you didn't actually read what is posted on the web page[1] that you acknowledged when you registered, please note: You've got IPR disclosure responsibilities if you participate in this discussion at all (including writing, speaking, singing or otherwise). If you or your employer has IPR on this stuff, get with it!"
Then why not use this text or something equivalent to it? As opposed to what started this discussion, or the update the IESG has now proposed that fails to address the issues people have raised? The fact that you can write this demonstrates it is possible to come up with something that is both accurate and meets your additional criteria of being simple and direct.
If we're not going to have simple text available in the room, let's at least stop with the charade that posting the Note Well is meaningful, and the chairs and shepherds and the IESG will simply have to continue to deal with the regular stream of late disclosures.
... and this is nothing but a strawman. I strongly doubt anyone objecting here is opposed to "simple" text as long as said text doesn't misstate what our IP rules are. Ned