It is a bit sketchy.
SMB1 was off (MS turned it off) or no longer exists on all the systems I support. These are all Windows systems and use local file shares.
Most people ask how to ENABLE it or put it back (many legacy medical devices seem to use it).
Several people report no issues not using it.
No one (here) has reported a Paradox system failing without it (that I have seen). Anyone?
There was discussion on how it affects Linux and SQL, but nothing absolute.
If you have in your machine and it is enabled, you can turn if off and test.