As proved by the depressingly-regular litany of AAIB bulletin reports concerning aircraft that have run into vehicles and other obstructions while coming on to the stand? There seem to be a lot of pilots who don't seem to find it easy to see (or, perhaps, look).
Bit of a generalisation. There isnt one such incident in the last 2 years. 2 Incidents caused by TRMs turning on guidance when the stand wasn't clear, a couple of bits of bad marshalling and several push back errors.