Yes, I read the article and several others on Zoom security. And yes, the sudden intense scrutiny of the newly famous app has uncovered problems. They have wisely suspended all feature development for 90 days to focus on security.
As an IT guy, these flaws seem to be mostly accidental vulnerabilities of the sort that naturally creep into relatively young software, rather than insecurity by design that we see in some prominent platforms. The Mac downloads problem that you mention strikes me as an operating system flaw unveiled rather than caused by compromises of the Zoom installation mechanism.
Of course, anyone that hacks into my Zoom sessions only risks learning science, scripture, or dad jokes. I will admit to being biased toward the company by the lawsuits from the New York AG reported in this article. Given the AG's history of coming after the NRA and firearms manufacturers with any opportunity and every excuse, my default assumption is that any organization he is suing must be doing something good. I need to guard against my own biases.