The B4 is one unit in a commander that leads you nowhere, comparing it to several broken abilities in a commander is dumb. B4 had counter play, recon and bomb, go find it with support, park units behind buildings. Still a silly unit with precision strike but now useless anyway.
CAS you cannot hide you cannot shoot down in time and cannot prevent, B4 was frustrating but was nowhere near the influence on a game this has. CAS doesn't tie up your MP into buying a gun, which can and was easily reconnoitred and destroyed. The B4 isn't built anymore so it's a dead comparison even with 3 of the scatter bulletins it doesn't hit anything, 9/10 players do seem to use CAS however.
If we're going to play the "Funny how player complained about" game why isn't it funny that axis players whined about the old IL2 strafe and this is fibe.
They use it because they can be completely losing the early to mid game being out played and out microed then the magical CAS bullshit starts and slowly drains your map control and negates all the unit preservation that you have done/been rewarded through good micro by a few clicks.
b4 is 10 times different and ALWAYS was very counter able. Not CAS just axis crutch/abuse tool.