They should not lose their eco bonus on crater. Because other civs dont lose theirs…
Its not like its better for macedonians to get silver on the meteorite…
If french go on meteorite they dont lose their vills speed bonus.
And it makes it impossible to gain upgrades. So either your opponent gets eco bonus + extra stone and you only get extra stone. Or your opponent get their eco bonus + extra stone and you only get your eco bonus.
Civs that get bonus from mining should get it on meteorite as well. Otherwise they are the only civ to lose something on that map.