Intrusion of privacy – Salesforce Authenticator Review

My company is requiring that input this app on my phone - this is my phone that I receive a small stipend from the company - and they require location and background app refresh to be turned on. I don't not have these on all the time for ANY app on my phone Bc of battery life and privacy concerns. Why can't sales force use my companies 2 factor auth tool? Is continuing to send text w a code too painful for them? Or, is this as I suspect, a massive data mining operation?
Review by Bernperro on Salesforce Authenticator.