I, personally, am not happy about the way that this or the subscription update have been handled because, to me, it makes me question how they would communicate something far more serious. If they're delisting forum posts because of a decision to not update their app in the Mac App Store yet, how can I be sure that they won't delist forum posts when they have a data breach? How can I be sure that they're not obfuscating other things that are more important than forum posts to try and sweep bigger issues under the rug? It's like the old adage goes - "If you're willing to lie about something that doesn't matter, what are you willing to do about something that does?"
These moves are forcing me to, at the very least, start looking at a new password manager. 1Password is still the best, in my opinion, in terms of features and usability but that won't always be the case and transparency and respect for your users are far more important to me than niche features. If I can't trust your company over something small, there's no way I'm going to continue trusting them with some of the most important info in my life. I currently use both LastPass (not a fan) and 1Password. I'll be re-evaluating KeePass and Bitwarden because of this.