I've enjoyed using my Apple Card for in-person transactions where I've needed to physically hand my card to someone (the primary benefit to me being the lack of sensitive numbers printed on the card). That being said, I've steadily reduced my usage of the card the more I've learned of Goldman Sach's displeasure servicing the card and had been anticipating this headline.
Personally, this is enough for me to stop using mine altogether as I don't like the sense of volatility I've gotten from it (especially as of now I don't know who, if anyone, will back it after Goldman and what their reputation is) whereas my usual cards give me better rewards and have always felt "stable".
I hardly ever. My app discovery is primarily outside of the App Store. Like you said, subscriptions have been over-exploitative and browsing the store is not what I find to be a pleasant experience.