Come on Bloggs: you know what I meant. I've seen too many totally unnecessary very expensive fuselage damages due to towing/pushbacks without wingtip spotters. Many of these were a/c being pushed out of hangers after maintenance. No yellow lines and an inconvenient spotlight pole that just happened to jump out and strike the a/c for no good reason.
No a/c movement without a spotter is a basic procedure like 2 people in the cockpit at all times. Whether people follow that SOP, professionally, is another matter. But what is guaranteed is no-one will do it if it's not required. Common sense disappeared long ago.