Show me an infantry unit that has 95/95 equipment like my SF do, and I'll concede that point. Until that can be done, I beg to differ.
Smaller units are vastly more efficient than larger units. Thus, a medium size SF force of 40 men can easily rival a 100+ man infantry force. SF also cost less to sustain them over time than an infantry unit. They are very valuable indeed.
Now, if only I had some range 5 SF....that would be sick. (yes I know they exist)
They do exist, but they can be rather hit and miss, since they seem to rely on the MI code. Arcaea has a 90/90 infantry RC, it would be interesting to put them up against that SF.