There seems to be no real context but just interpreting things by knee-jerking since well, the camera was in a particular angle, is it even known what was said between Grealish and Madueke?
It really can be a question about what's seen as extreme and what's not, Madueke might not have seen T.Silva crying but just the back of his head, so maybe, just maybe T.Silva was hyper-aware that this might have been the last chance to play a final in English football and was crying from a very personal standpoint while at the same time Madueke saw that as just the start of something bigger than just reaching the semi-finals which would have also been from his own angle.
I won't be judging Madueke for talking and laughing after the final whistle because I don't know anything about him, it's not enough for me to assume that he couldn't care less about winning or losing since all I see is that he's not faking an emotion for the cameras and is responding to Grealish in a positive manner and I personally don't believe that such a behaviour alone should trigger any kind of a discussion about whether or not Madueke should be at the club, maybe the two are friends outside of the pitch, I don't know.
So I don't know what to say, in my own personal life, half a year ago I lost my grandmother, somehow prior to that I avoided going to funerals since every other grandparent died before I was born or when I was too little so as it happened the first funeral I went to was for one of my dearest family members that I have loved the most in my life and it wasn't easy to see other people acting in a way that I would personally describe as strange or odd but I am mature enough to know that everyone deals with sadness and with stuff in their own ways, it's not always so straight-forward to see how much something means to someone.