Traditionally giving the individual soldier a giggle switch (aka full auto) has been a wash offensively but a great asset in defensive situations at the expense

Traditionally giving the individual soldier a giggle switch (aka full auto) has been a wash offensively but a great asset in defensive situations at the expense of burning through a lot more ammo (better to have spent brass than dead bodies though so it's worth it). I don't see what's changed in the last ~70yr that would change that.