No, but it does require a serialization mechanism whose developers aren't actively hostile to it being used for information storage.
In other words, you can't use the bitcoin blockchain for this.
They'll be overruled by an economy majority eventually.
Except that they aren't the majority! You see, that's the issue. As long as the majority of the use of the BTC blockchain is as money, not as a key/value store, people using it as a key/value store are vulnerable to sudden changes that aren't in their interest.