Gamers are still using vega 56 for gaming, it hasn't passed by gamers like you said, that card will play any demanding games till date at 1080p with no problem, in my country people are still gaming with RX580 graphic card too
In 2017, when the boom in demand for video cards for mining began, gamers could not purchase them.
In 1 month All video cards that could mine Ethereum disappeared from the store shelves. These video cards were cheaply sold in the secondary market in 2019,
perhaps then they were bought by gamers.