I read somewhere quite recently (sorry, don't have ref. right now) that its a bit of a large team effort (several to many engineers working together) to ensure getting the job, and then a continued team effort (again several to many engineers) to ensure continued high performance at said job...in order to be able to persist the operations. Quite clever as i understand, though brutal for participants i also imagine.
I guess I'll have to ask for a phone along with a laptop from any potential employer that requires this app. (I wonder if MS Authenticator would even run on my de-Googled Android.) I'd much prefer to keep work equipment separate from personal equipment anyways.