I mean, you could probably include some links to some of SimpleX's basic functionality in a nostr client without too much difficulty provided you're proficient in Haskell. But it wouldn't be an actual integration with Nostr. It would basically just be shortcuts to a seperately installed SimpleX client within the Nostr client. Personally, I wouldn't find value in that, but maybe some people would. I certainly encourage you to give it a shot. Frankenstein coding can lead to some amazing results!
Discussion
Hahaha your last line is gold :D
Its not adding a lot of additional value, I agree 100%, but that's kinda the point. Our Nostr devs reinvent the wheel a lot, and the SimpleX wheel already has iron rims and all-tension sinew spokes.
Adopt it into the tribe already, so we can go conquer Europe.
One thing that makes it difficult is the fact that virtually all of SimpleX is original coding. It hardly borrows from any other projects, or uses anything standard. Add that to the fact that it's 100% Haskell and it's easy to see why it's a very difficult codebase to work with.
Yeah, that's the whole point. It's just integrated superficially, in the display. You can make two things look like one thing, by changing the way they're displayed to the end user.