Development is hard. I wouldn’t be surprised if they are waiting to see if Lemmy sticks before spending time.
Also they need to make a living some how. I’m sure implementing ads into a Lemmy app right now wouldn’t go over well.
It’s better for them to dust their resume off, update it, and attempt to get a new job before dabbling into making a free app with no revenue streams.
You do realize Reddit broke it, right? Unless you have millions of dollars to give him per year, Reddit gave him the boot. You’re welcome to contact him privately and fund the project.