I'm a bit confused, how do the receiver (who don't know or use wallet which support incognito protocol) receive shielded/privacy coins (pBTC, pETH, pUSDT, etc.)?
With my few minute's research on the project the user of the incognito wallet is to shield their coin to obtain the privacy coin pBTC, pETH anonymous coin which will be provided by the team and can be can swap or redeem into for clean or neutral BTC, ETH anytime before sending.
In the wallet, you can easily to as on-chain as cross-chain transfers. If you do it on-incognito side chain it's fully confidential.
Are there any article/example (whether non-technical/technical explanation) specific about it?
This
article explanation should be enough for you to understand