Wow all those jpn players and TCGLive players all ceased to exist, (I mention jpn players bc I can bet you have seen winning results of decks you will absolutely consider garbage, I understand the Bo1 scenario so spare the explanation). I personally wouldnt call Gholdengo tier decks "rogue" in the slightest they still enter the meta realm they appear in regionals and a rise in their power level is always something to be on the lookout for.
You can say the competitive scene has grown absolutely yes, but the entire TCG community has grown, more collectors as well as more casual players. You really can't prove the competitive sphere has grown alone. Now if I were to personally play irl ofc it'd be more enticing to play a meta deck, I can play 50+ decks for *free* online, I cant do that physically, as cheap as Pokemon tcg might be. No wonder you wont see off meta decks that commonly in leagues, it's common sense my guy.
Gholdengo lacks representation to have more precise data, but even the data we have, puts it on par with tier 3 decks which isn't far from rogue and is usually reserved for popular & massively underperforming decks or overperforming rogue decks.
Regardless, not all rogue decks are made equal, some have potential like blissey, arceus or gouging fire, some need more cards but have some fundamentals like tsareena, united wings or festival and some are never going to be good like torterra, meowscarada or tyranitar ex.
And Japanese results are funny. They aren't quite representative for a multitude of reasons, they have different metas from ours and develop the meta before we can even try the cards. Dragapult was born "dead" in this side of the world when in the first weeks it seemed like a tier 0 deck.
Also, they do a bunch of weird stuff that not always translates.
-------
Ref NAIC's data:
Tier 1
Snorlax 7 players 10.71 points per player
Gardevoir: 62 players 9.7 points per player
Tier 2
Charizard: 13 players 9 points per player
Lost box: 43 players 8.69 points per player
Chien pao: 10 players 8.3 points per player
Ancient box: 5 players 8.2 points per player
Tier 3
Bolt: 35 players 5.91 points per player
Pult: 20 players 5.75 points per player
Miraidon: 18 players 5.22 points per player
Lugia: 46 players 5.17 points per player
Tina: 7 players 5.14 points per player
Decks with volatile data
Regidrago: 4 players 10 points per player
Future box: 4 players10 points per player
Gholdengo: 3 players 6 points per player
Thorns: 3 players 6 points per player
Pidgeot control: 5 players 4.4 points per player
Diaga: 2 players 2.5 points per player
Greninja: 1 player 8 points per player
Roaring moon: 1 player 5 points per player