I believe he refer to top 10 or 100 coins on CMC or Coingecko that considered as good coins, while the fact they're list only based on the market cap, not from the usage.
You've noticed this well, because most people don't even know why a coin/token is in a certain position - and they probably assume that it has something to do with how good a certain project is. Market cap manipulation is something most altcoins use, and the coin you mentioned has just under an incredible 50 billion coins in circulation.
Perhaps people evaluate the market cap as something similar to the standings, in which the higher the position, the better and more worthy altcoin.Another good tip would be not to invest in anything that has a max supply measured in hundreds of millions or billions of coins, especially if a certain percentage is pre-mined and held by the owner who will dump it the first time he pump the price.
Briefly, this advice can be voiced as follows: don't invest in something that "smells" bad. There are a lot of shitcoins on the crypto market. Most of the market is shitcoins. Therefore, if you don’t know what to invest in, then just invest in bitcoin. Trying to guess with the “true” and “promising” altcoin is more like a minesweeper game, where almost every cell is a shitcoin.