I mean, I have to imagine the thing holding back DS ports (at least mechanically) is the second screen features. Even if you included a toggle key to switch your active "display", Dawn has the Boss Seals and Portrait and Ecclesia both have unlockable characters who are literally unplayable without a touchscreen, which gaming PCs and Playstations and Xboxes and Switches in Docked Mode tend not to have.
GBA is easy to emulate for literally everything out there that can play games at all, and thus MUCH easier to slap into a collection for a quick, Halloween timed release.
I do hope someone can port the DS 'vanias with a workaround for all the issues the Dual Screen nature of the original hardware causes.