Same here. Not a mod, but have always used Reddit from the desktop (with the new UI turned off), so zero interest in third-party apps. It's one thing to do messaging or email while out and about, but why would I want to intentionally use a text-intensive system like Reddit through a small screen without a keyboard to type on?
I wonder if the API change will end the practice of mods sharing automated block lists (Context for others: If you post in a wrongthink subreddit, many other subreddits will preemptively ban you regardless of your actual activity in them, if any). If so, and if there are fewer handfuls of powermods that control dozens of subreddits, I'm all for the change.