Of course there’s a difference!
There is no Mechaber that says “Coca Cola chova hee”.
But there is one that reads, “Mayim Acharonim chova hee”.
So if one’s minhag is not to adhere to the Sh. A., kol hakavod, but be gracious and allow others to keep the halacha.
To quote you; To each their own. Facilitate it!