Lol yeah anyone who dares utter a negative word about Klopp is a hater and complainer. I’ve already said I’m fine with his decision to play the U23s. I just find his whining about it annoying. I felt the same way about when Mourinho whines about this that or the other.
He's 'whining' because he wants them to change things. He could just quietly send out the reserves, of course, but I do think this is genuinely a concern he is passionate about. I can certainly see why. If you work a job, feel you are pretty busy, and yet they keep adding tasks..well you'll probably 'whine' too, maybe more so than Klopp even.
There are of course objective, calculated reasons for why all these competitions occur and Liverpool participates even if current management doesn't like it. But Klopp like all of us is a prisoner of his own viewpoint. That's why outspoken, emotional people like him tend to get into controversies as they will present their viewpoint in a strong fashion which triggers a response in others. And in fact because my perspective as a non-Liverpool fan is very different, I do disagree with him on a few things in this regard. But I can see where he comes from and don't blame him for feeling the way he does and saying it the way he does.