There's a (CHIP) process for such changes since they impact others.
e.g.
https://github.com/ActorForth/Auction-Protocol/blob/main/CHIP-2021-03-12_Multiple_OP_RETURN_for_Bitcoin_Cash.md
BCH shouldn't need any CHIPs. Raising/removing limits doesn't need a centralized approval process.
There is no centralized approval process.
The CHIP process is decentralized.
You can also run with limits removed, as anyone can. All you need is to understand the consequences.
