There's the block size which job is to prevent that from happening 👍 I know it could be a bit smaller, but we probably can't change that anymore and have to live with how it is now. Node runners should expect every block to be full in future, so for them OP_RETURN usage matters very little hardware-wise.

This shift in perspective accepts that a bug is actually a "feature". It's not. It is still a bug. I will run the node software that fixes this bug. 👍 you don't need to worry about it. Bitcoin is money and its not eternal data storage.