Just another day on the official Sansar Discord channel:
(By the way, I did ask Ecne and Lillani permission to post what they said. I will *never* post an image like this from Discord without checking with all people quoted first.)
UPDATE: Medhue, who runs an animations business in Second Life, and who is well known for his tutorial videos for Sansar, weighs in:
You are SPOT ON about rigging. Technically, if given all the right resources to properly rig, there should be little to no poke thru. Animation is how you would test your weights in the rigging. Marvelous Designer clothing, though, is AUTO rigged, by the Sansar client. Generally speaking, if the clothing is not very loose fitting, then the auto rigger does OK, not great or perfect. The further you move the clothing from the body, the hard time the auto rigger will have. ALL of this is no excuse for banning animation.
All that said, rigging and weighting are one of those things that you never actually perfect, but more or less give up and call good enough.