Libreddit (and sometimes teddit) are essential to me now to watch reddit content without getting into reddit. But I wonder if they will keep working, mostly since Stealth on android won't keep working after.
Unfortunately for us, Zuck is actually a little savvier than these other idiots. Just as unethical, but sharper. That's why his company is doing well and you don't hear about him all that much unless you're into tech news.
It looks like the method they'll be going with for legal reasons is to allow instance operators to use their own API keys. This might be a good solution if you self-host your own private instance (easy with docker on a home network, no domain name required) with low traffic, but the Reddit API change will probably kill the larger public instances with many users, as those will definitely have traffic over the API limits.