Coinbase is one of the world-leading exchanges has recorded the highest number of listing in 2021 as the exchange has a total of 139 tradable assets, which indicates a high volume of listing in this year 2021. This boom in the listing is traceable to the rise of new projects and platforms such as NFTs, Defi, and the metaverse which have made the entire cryptocurrency market increase in its demands and usability.
Ink:
https://cointelegraph.com/news/listing-frenzy-coinbase-adds-nearly-100-crypto-assets-for-trading-in-2021If they have added 83 assets to their exchange for trade and they now have 139 tradeable assets in total then this was really a massive growth in the last year as the number more than doubled in this short period of time. As others already mentioned in here they kind of had to do that and they even added some meme coins to their portfolio and i would guess that they did not want to add such sh*t coins but they had such a high volume at times that they just could not miss out on those trading fees.