Or:
Instead of a sidechain, some crank can make these tokens on testnet3 (
despite testnet being only intended for testing, but do you really think these guys will read the fine print anyway?), and testnet3 gets all the traffic instead of Bitcoin. This is something that can be done immediately right now, by some random guy on Twitter.
At least it will give the bitcoin protocol developers a compelling excuse to launch testnet4

It sounds more realistic than you might expect when there are exchange which have BTC/tBTC pair. And they can even make argument testnet coin actually have value because there's cost to mine it.
Putting pressure on the owner/inventor will make him feel the pain regular users feel because of his invention. I think it's quite fair and no need to introduce any limits/bans/censorship on the Bitcoin network.
As if suing Casey would stop people from using Ordinals. But if you or someone else suing Casey for such reason, i would classify such action as attack to open source software/development and i hope you went bankrupt after lose on court.