Most node runners update when a core update comes out without thinking about it much. If we all do that after this PR is merged, no fork.
This is different in history because during the blocksize wars Core told BSV to go away. BSV forked the software and made their own version creating the chain fork with their own chain. Core has been the source of truth for every fork in the past.
Now we are looking at a potential fork where the latest version of Core will no longer be the source of truth.