Auto fire doesn't make it any different from burst weapons in the past. Its literally functions the same as burst fire weapons in older games just with a "auto fire" function. Having a trigger finger, or lack of, doesn't make the gun shoot any faster or slower than it already does.
And the fact that most of the automatic weapons in this game have some serious drawback for in either recoil, range, firerate, or damage, praying and spraying definitely isn't some type of ez mode. Thing is, M8 doesn't have many drawbacks itself - the burst fire delay is short as hell, it has minimal recoil even without grip, great range, good damage, and completely shuts out the XR-2 and Shieva at any range. It doesn't take much skill to use.
Bookmark or quote me on this: it will be the top tier weapon that will be the go-to choice for many and will gain more popularity once more start to see how good it is. From competitive players to your daily pubstomper.