So pyros by the clubs, ie Aberdeen recently and authorities at cup final, international games are fine, but if fans do it, it's a big no no and fine. Either there is a outright ban, or you allow it.
As someone said who employed the stewards? Are they not liable for not doing their job correctly.
Scottish football have more pressing issues to deal with, ie dodgy club ownerships, clubs financially struggling, sectarian singing etc etc.