Do I need to torque all spark plugs?

What is your question?

I have an 01 yukon xl 5.3 I recently changed spark plugs and wires but the plug closest to firewall on passenger side was pproblems removing and installing even with a u joint extension. The point I'm getting to is I wssnt able to get a torque wrench in to fit. How much of a problem will I have if its not actually fully tight to torque specs

What makes this problem better or worse?

Not sure yet

How long has your 2001 GMC Yukon XL 1500 had this problem?

Days