It still breaks up and routs armor crazy fast, makes expensive infantry and IFVs unattractive, and still makes it disproportionately difficult to assault even a token defending force. Good luck keeping out of spotting range if the guy is running a recon chopper and hid a few jeeps along his lines. Hell, the Mi-9 and the NATO equivalents can spot from outside area SAM range and often outside your own spotter range.
I dunno, I'm having great results with infantry inside buildings or forests keeping their scouts VERY far with my attack helicopters and MI-2 to chase their air scouts. When dealing with infantry, it's really all about scouting better. Infantry without spotting and a way to remove their spotters will be killed, but it's fair imho, since arty is the counter to infantry in cover.
About the expensive IFVs, as long as you keep them a little far from the infantry - protecting their flanks i.e., they are very atractive. I just love my BMP-3s. If they try to flank with just a few tanks or IFVs, the missiles can wipe them before they can reach (or detect) the BMPs. Again, scouting units FTW.