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.
How is
Wasabi without own Electrum server any better than
Sparrow without own Electrum server, though?
You missed the part where i mentioned Wasabi privacy feature. But take note i'm
only talking about how wallet obtain transaction data, not coinjoin data.
Does Wasabi have a
'privacy feature' that addresses the SPV aspect of the wallet?
I'm not aware of such a system;
actually even created a thread about this in the past with an idea and it turned out not to be an easy task to solve.
So far I don't believe any SPV wallet - 'privacy wallet' or not - has solved the issue of pulling wallet balances, transactions and publishing transactions to the blockchain, without having the Electrum server(s) that it connects to, as a central point of (privacy) failure. A Tor connection, a VPN or a CoinJoin feature doesn't change that the server at the end of the connection, knows your addresses and that they're all yours (linked to each other).
As i mentioned on your thread, Wasabi Wallet 1.0 use BIP 157/158 (also called neutrino[1]) which basically request block filter from full node and download whole block if SPV client determine that block has relevant transaction. Additionally Wasabi Wallet 1.0 connect to random full node to ask those data[2]. It's not perfect/solve all privacy concern, but IMO it's few steps ahead compared with default Electrum wallet.