I assume the original reason was to offer a slightly cheaper and safer area for families with children with more appropriate facilities. If someone wants to take small kids to the game then they want them to be able to see the players which just isn’t possible in certain areas with adults all around them, it can be daunting for them.
I guess that’s still needed, only not so big, but that’s because it’s hard to keep it small as they can’t move family groups to similar seats together in other places - e.g. few will agree to move from row T to row C in another stand where the only alternatives might be.
If people think it’s that big a problem then we all need to accept that we might need to shuffle our seats around to make space for those moving out of a smaller family area. Can’t see it happening myself, but the club are offering an area that allows families to save a bit of money, I don’t know why people get so upset about it, especially when a lot of people complain about ticket prices.