If it is true that in the latest version of BlueWallet, every user can create a silent payment address, I can say that BlueWallet is the first open source Bitcoin-specific wallet that supports this feature, although I don't know if there are other Bitcoin-specific software wallets besides BlueWallet.
As the post you quoted mentions, Blue Wallet can only send to silent payment addresses. You can still not create a silent payment address with Blue Wallet and receive bitcoin to it. If you want that, you will have to test Cake Wallet or Silentium. The airgapped HW SeedSigner is also playing around with this functionality, and so is BitBox. Silent payments are still in beta and testing phases when it comes to software support.