Confused About Event Pushback

This Event will be the first that I've participated in and it seems easy enough to me, but I couldn't help but notice all the negative comments surrounding it about "FOMO," and "Not respecting players' time," among other things.

From what I know, you just need to make and link an account and complete six 15-20 minute Operations in a ten-day window to get the Errant helmet - for free. Why is this a problem? Is my perspective just skewed by other live-service games or what?