Wallets as Exodus and others add the option to delegate to different coins via the wallet, only by few taps. So the wallet uses Dapp which works on that chosen blockchain, or has a bridge/other interoperability solution to make the delegation. Without the wallet, its a few technical steps, some annoying and unfriendly procedure that needs to be done. So when interoperability solution will be found, such as Quant network or any other, every wallet will offer to delegate any coin with ease and very user friendly way. Did I get the picture right?
Thanks!
OP conveys delegation by means of way exchanging a coin, as examples if you are trying to swap/buy some token you need to go through a DEX or CEX, Exodus solves it by directly integrating the exchange function within their own application via third-party API, either by connecting to some DEX or integrating it via FTX[1].
[1] https://support.exodus.com/category/1642-ftx-exchange