We have our own individual idea, it doesn't make it the wrong or right one.
SonMina is a favorite pair of mine and out of all my sonic shippings I would definately choose that one above Sonamy or Sonally, but it doesn't make them wrong.
They simply don't agree because the relationship was short and in later issues very few people have actually seen.
Which is understandable.
To be a good Sonimina fan, draw the art, be a fan.
Don't tell anyone they're right or wrong, ship the ship, and let it spread.