I'm Silver and though agree the A lounge is a bit far if your transit is B to B, there's a decent chance both your flights won't be arriving AND departing from B, making one of the lounge on the way of your natural transit. Also going from B to A lounge is mostly vertical travel, as you are spat out by transit security almost in the middle or at the middle of the terminal, take some magic elevators onto the train, then do the same in reverse up to the A lounge, probably <100 steps total from security.

As a self-paid Y traveller I just got Silver this year after 9 months of EK Commitment and find it makes a significant difference to the quality of travel (incl several op-ups), but am looking forward to hitting Gold in a few months.

FWIW I don't think Hamad international on Doha has a very short transit for most people, that airport is massive, I've definitely walked for miles there (pretty certain none of the three DXB concourses is over 1km, let alone 1mi).