Yeah what i concluded is that you dont need an alternate if the aerodrome is less than 6 hours away and that it has 2 separate runways and that the ceiling is 2000 feet or circling minima + 500' + visibility of 5km. Or that it is an isolated aerodrome.
You do need 2 alternates if the destination aerodrome has weather below minima +/- 1 hour or there are no met reports available.