I would guess that what they are talking about is market cap, and not the price of the currency because that would make more sense. Price wise ADA can't reach ETH at all, that would not be possible, and to be fair nobody really expects it to catch neither, but marketcap ranking is another discussion.
Not that it will catch there neither, ADA has 15 billion marketcap whereas ETH has about 420 billion (lol) so I do not think that we are going to see ADA pass there neither. So, only thing we can have right now is the question "which one will make you more money if you invest right now", and in that situation ADA has a chance, doesn't mean it can win, but at the very least there is a possibility of ADA being better investment.
You are absolutely correct that It seems unlikely that price wise ADA will reach Etherem's value in the foreseeable future, becuase the total value locked on Ethereum ecosystem is 62.3 Billion dollar and no other chain including prominent chains such as BNB and SOLANA are not even close to it. Investment ADA can be considered once we see some tangible progress in their ecosystem that might translate into price increase if market begins to see ADA as a promising coin.