OK I tried this long form, but here's the TLDR, in the hopes that I get a more direct response
1. I cannot believe that some people think the micro requirement in this game is too high. Sorry. Compared to SC2 or any MOBA, the mechanical burden of this game is fairly low.
Its not about is it to much or not. Its about what has been lost from COH1 mechanics. We all love COH for a reason, and that was not because it was like other games (SC and others)
2. I don't see how it's a bad thing that infantry are required to move to stay clear of grenades, aside from COH1 players being upset that it's different from what they've come to expect. Can someone explain this to me?
In COH if you were sitting in green cover and some, lets say noob, walks over the road to throw granade at your unit in cover, he will most likely lose more man than you even if he throws the nade. Also, you could target and kill model that is throwing nade. Therefore you always had to think what you are doing, where you are positioning and calculate will you be able to win every engagement, is it worth it, etc. Right now all that is gone and replaced with: 'I throw nade at you, you throw nade at me' lets see who can get out of the way and have more luck with RNG.
Your units even seek autocover on their own
3. with Mortars, snipers, MGs, AT Guns, and vehicles all placing a much higher premium on positioning than micro (even, I'd contest, Scout Cars and the T70) I feel that it's quite obvious that positioning is important.
In COH, letting your sniper have a shoot at any unit required great deal of thinking and calculating. Snipers used camo/uncamo system. Shooting your sniper of often resulted in your sniper being counter-shoot in his face.
Vehicle micro in COH meant you had to be careful where you go and what you do because there were many things that could kill your vehicle. Now if you have Panther your micro consists of avoiding SU85's, or if you have t70 kill as many units before Piv shows up.
So basically, COH2 has become stupidified for user and is starting to look a lot like SC2. All we need is Chuck Norris and Rambo superheros that kill everything DLC, to complete the feel.
Most people would love that and I am sure it would sell even better, but old COH players loved COH because it wasn't like that
Hope that helps you
P.S. You seem to think this is only about nades and positioning. There were nades, riflenades, mortars, vehicle buttoning, at nades, etc in COH. And you needed to dodge those just as much as in COH2. (these things were not introduced in COH2 and old COH players find it to hard to cope with as you seem to think)
Its about entire game losing tactical importance to clicking
mindlessly (not to be confused with faster) and running around wrecking havoc with OP unit at that moment.
Where in COH you had to think how to maintain your fuel and pop cap to pull out that tiger, you only had to wait until you have enough fuel now. etc etc