There are some quite hilarious errors in the Forbes article (I read the original). For example, when they talk about "spin-offs", they confuse "code forks" like LTC with "chain forks" like BCH and BSV. They put both in the same category. And yes, as others have already written, Monero is not a Bitcoin spin-off in any way, only if you say "all cryptos are Bitcoin spinoffs".
They even admit that some coins they list have some usage, like Litecoin (see table). Litecoin sees actually a lot of usage, about 30 to 50% of Bitcoin's
In the last three months, LTC had around 200.000 transactions per day, peaking at 400.000 in the last days, with Bitcoin around 400.000 per day.
With some entries I agree though. The big "Ethereum killer" category and XRP are the best examples; most of them offer little to differentiate themselves from Ethereum, and as they are almost all highly centralized they also don't have really an utility as a "public good", because they exist mainly to benefit a team of founders and speculative investors. Cardano having a "cult-like following" is also not far from reality.
However, I also don't think these blockchains have necessarily a bad outlook: If the demands for Turing-complete smart contracts grows, then having a low-fee backup always can open possibilities. So at least the highest-ranked chains of this category have some chances to prevail if they stay up to date with the blockchain state of the art.