There is a lot to unpack from your post. First of all, there is no doubt that technology in general adds value for the human race - like the another commenter said, foundational things like fire, tools all the way to the zipper and buttons you have on clothings, umbrellas you bring into the rain, the video chats you have with loved ones during COVID - those are all the fruits of technology.
But if you get down to the particulars, value can be very subjective. Some people value fancy new tech sneakers, primate NFTs whereas others value new computer vision technology or a new programming language. So are certain technologies adding value? Depends on who you ask.
As for who is capturing value in a capitalistic society, I think you already have the answer. Simply put, if your company operates at a 50% efficiency and you bump it up to 70% with tech and automation, rest assured that you are going to see job cuts to “become lean” and to “do less with more”, followed by increased targets to produce more. You are not going to get more leisure time but instead be asked to push ahead until you hit the physical limit and break.