It was an opinion given by a legal person but not in any court - it ain't 'law'. It was given in an independent commission funded by the SPL, nothing more.
You, yourself, could create a club, draw up a set of rules and invite a dozen of your mates to join. If one of those mates breaks the rules and you eject him from the club, you could then engage a lawyer and ask her whether those rules had been applied correctly. Her saying 'yes' doesn't make it a legally-binding point of law, just confirmation that you'd acted within your club's rules.