When things like this happen, it puts the products' deliberate security vulnerabilities (and in this case, outright hostility) in stark relief. But then people think "I wouldn't be that stupid" or "what can I even do about it" as they go right back to continue relying on these products.
It's certainly understandable how we all have to compromise and suffer insecure systems simply in order to get things done, especially when interfacing with strangers. But for our most intimate communications and personal relationships, we should insist on secure software! This wouldn't have happened with Matrix, this wouldn't have happened with XMPP, this wouldn't have even happened with Signal. And to that reflexive thought of "that takes too much time and effort, especially for non-techies" - I'm pretty sure the person in the article sure wishes she had spend that effort now!