No, it was Skirmish and Firefight players (rightfully) complaining on Discord that they can't find matches anymore because the two modes are too different to be in one playlist, while the complaints about Push and Frontline being together seemed to be pretty much zero. If anything, I saw people welcoming the fact, especially in game. Except you and OP, that is. NWI applied the compaints about Firefight and Skirmish to every mode, which now makes people unhappy, again when looking at the forums and the Discord server.
Who asked for Frontline again??