I think you hearing a lot about it because (a) everyone is quarantined and wanting to use the tools they use at work to help setup book club meetings, table-top RPG sessions (did this last night and it actually worked great), etc. (b) it's perhaps easier to use than some others, (c) there's likely a huge PR push right now, and (d) I believe its pricing is better for non-enterprise use than others.
My company's virtual meeting solutions are a mess; it's the one really messy area in our tooling. For the longest time we had GoTo, but then the dev team specifically also had hipchat for Slack-like interactions. Then hipchat went away, and for some reason the org took that as a cue to do an org-wide rollout of MS Teams, with no approval for us to use Slack. Somewhere along the way certain people somehow acquired Zoom licenses and started using those. Then just about two weeks ago the whole org was told to switch to Zoom, but now not enough people have licenses and all the old GoTo licenses are kaput.
Anyways, the reason I have heard various people from the business side give for why they like Zoom is "GoTo was too hard to use." I don't really see that, and I also wonder if there's some sort of 'FOMO' going on. A couple big vendors we interact with use Zoom, Zoom is big in the news currently -- "everybody uses Zoom!" I do also think it's maybe a bit cheaper at enterprise scale.
I don't mind Zoom from a UX/call quality perspective. I think Alt-A to unmute is super unintuitive but that's a very minor quibble, and for all I know shortcuts are customizable. I am, however, very discouraged by Zoom's privacy story as we're discussing here.
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As my own side note, I am generally on board with almost everything MS has been doing lately -- we're mostly a MS shop as they help us with pricing, given we're a nonprofit, while AWS told us 'no chance' -- but Teams has to be the single buggiest MS product I've ever used. Just now, over the past month or so, I've noticed it very slowly improving. But for the first year of our usage, we experienced constant issues. Dropped calls, silent crashes, daily sync failures. My favorite one was, every time I would shut down Teams, it would relaunch itself a few seconds later with a message saying "sorry, Teams has crashed, we're recovering." Apparently every time the program received a shutdown msg it just assumed "oops, another crash."