So how does samsung have the advantage, the right wallet can be installed on any smartphone?

To be completely fair, it didn't seem like he singled out Samsung lol. It just so happens that the writer of the piece was a Samsung contributor.
And I don't know about this. I feel like a proper PC set up would be safer just because it's more unlikely to get lost or stolen. They can be just as hard to break into with proper precautions.
But yeah, if we're talking about the most secure device for crypto, it has to be hardware wallets and air-gapped wallets. It has to be noted that you can easily set up an air-gapped wallet with a smartphone too lol.