it's been a "work in progress" since like 2022 lmao, no one takes the rankings seriously.
The ranking system in this website also leans heavily towards games played and if you win a lot of games, regardless (usually) of the "level" of that game, the team climbs in ranking. It also heavily skews how much the team climbs based on their opponent's own ranking. So theoretically, G2 beating FNC in RBHG or some other off-season tournament gets them as many points as G2 beating FNC in Champs.
Because of that, it's easy for t2 teams, most of which already have a higher rank, to farm each other and skyrocket up the rankings. RANKERS is a big example since they're undefeated (for now), and Apeks in 2023-2024 while they were still in EMEA t2 were always like top 3 in the website rankings