I believe so, they wanted bigger blocks. They did a hard fork so the miner must choose which chain to validate as the longest.
A soft for like OP_ cat can be something you can choose to use or not, its backwards compatible
Discussion
Why would you want a longer chain?
The proof of work is determined by the length of the chain. When a new node connects to the bitcoin blockchain, it begins by downloading the entire chain from its peers. The node will look for the longest list of transactions provided by its peers, as the longest chain with the most proof of work (blocks) will be adopted by all peer nodes. Once the hash of the next block is created, it is broadcasted to the network, signaling the search for the next block and record the newest block.
The current longest verifie blockchain is “bitcoin”, which records the movement of every satoshi since 2009.
To manipulate transactions, a bad actor would need to create a longer chain of authorizations to compete against the established blockchain. Which is called a %51 attack as the bad actor would require 51% of the networks hash rate to create and announce a different blockchain outside of the market for blockspace.