Frankly, the pills aren't a great alternative, except for people who aren't thinking it through. You won't get the pills until you've been sick and diagnosed, at which point you have to take them for five days...during which time you'll be sick for the first few days, though hopefully feeling better over that time. You'll have been infectious for days, you'll still be infectious during the time you are feeling sick. There's no advantage for the pills, except that there isn't the same amount of anti-vax misinformation swirling around them.