I know there have been many discussions related to the topic & there is a clear statement from Alfred's mum that as they are only 2 people working on development they won't be able to create Android Remote.
But I think I have a solution which involves very less or no coding. But it will be using a third-party app, Unified Remote.
I was trying something recently and saw could do a lot of things using Unified Remote (Paid one) on my Mac for example launching the apps, launching the Spotlight, many more things.
So I created a simple quick action thing, so when I click on it, it holds the option + spacebar and launches Alfred on my Mac.
Then got the idea @Vero or someone from the community can build a remote in the Unified Remote app that can be used to control Alfred.