something that's likely to be removed from the next update bircoin's software will receive?
How likely? Very, very unlikely, there is a huge difference between censoring and banning something on protocol level, an example of something you can't do on the blockchain is spend bitcoin you don't own, or construct and add a block that does not meet diff target, or mine a block that is 100mb large, doing anything of that would be rejected by the protocol and would/could result in a fork.
As far as ordis go, IF the upgrade does not lead to something that makes including them result in the same things mentioned above -- not going to work.
Luke's proposed update is just a boolean that you set to true or false to "filter" Ordis, I bet you most pools won't opt-in, most other nodes just won't care, a few might do, because blocks that contain them will still be valid.