I don't miss the confused reaction but I do miss the sad reaction. We are living in a tumultuous time right now with a global pandemic, and more. You don't always have the words to express that you are feeling for that person's difficult time and seeing a bunch of empty "I'm so sorry"'s in a thread I think is just as damning as no one replying at all to someone's rough time. The sad reaction gave people a means to offer support, show that they read the post without replying with an empty platitude that means even less than a supportive reaction.