If it's truly a nefarious entity that's using Ordinals as an attack vector, then that entity will provide tools and apps for newbies to make it easier to send their Ordinals transactions to a miner.
We always make spam harder not impossible. Every single standard rule can be broken if you contact a miner. But mining pools aren't the most willing to become pariahs in the Bitcoin community by explicitly accepting something that is being rejected by majority of the network as non-standard (assuming it gets implemented!) which means we make it "harder" to spam.