Put back? They've never had full sized up and down arrow keys on the MacBooks. What I miss are the half-sized left and right keys - the empty space above them made it easy to position my hand over the arrow keys without looking.
I'm with you here — no generation of MB/MBP has ever had full-sized up/down arrow keys [1][2]. I guess perhaps people are meaning how the left/right arrow keys went from being half-sized to full-sized? I'd like to half my half-sized left/right back...
Good point, just took a look at the picture of a 2014 mbp which I had previously. Something about the older up/down arrows was much better, and I can’t put my finger on it (literally, since I do not have the 2014 anymore).