It's valid best next option for those who don't run their own Bitcoin Core/Electrum server, but average user is likely to make mistake and weaken their own privacy.
Such is the nature of coinjoins, and indeed, bitcoin. If you are serious about privacy, then you
must run your own node. As n0nce points out, without it, you are by definition relying on unknown third parties. You can either run your own node and coinjoin in a decentralized manner using JoinMarket, or you can not use your own node and depend on third parties, be that Electrum servers, Samourai servers, Wasabi servers, whomever. And if you depend on third parties, then you are subjected to their rules, spying, and censorship, as we have seen in the case of Wasabi.
By using Sparrow you are still depending on third parties, but at least those third parties aren't in cahoots with blockchain analysis companies. But if that is still too complex for the average user to use without compromising their privacy in some manner, then you can just stick to ChipMixer.