OP does have a point given the current state of the game.
Goods type is a significant factor in the value of a province relative to its development, whether conquering, developing it, deciding whether to make it into a state, or estate management.
Or at least it would be, except: a) in the early game, goods other than gold aren't worth much anyway, b) once Absolutism rolls around, most players are just outright painting the map and don't care what good is in a given province, c) as far as your income is concerned, state/estate micromanagement is mostly rendered moot by the overpowered income from trade company provinces and colonial nations (and if you don't have either of those by the middle of the game, you're not serious about trying to make money). TC-land and the Americas have high-quality goods anyway, so it's just another incentive to focus your expansion on those places, but honestly, with current game rules, focusing on TC-land in preference to conquest in Europe would be the right choice even if Africa and Asia produced nothing but fish and wool.
The strategic bonuses for a dominant trade share in a good add up to a lot of power, but in most situations, they're not a deliberate choice but rather a 'winners win more' mechanic. The per-province bonuses are mostly fluff, although some of them do add up (e.g. grain's per-province bonus makes it a decent good in low-development provinces).