Often its not that difficult once you know how to do it. On one of my cars you could either struggle to try and change the bulb in situ or undo three bolts and remove the whole assembly making changing easy. The latter method was not the obvious solution and I guess that those taking
30 minutes with scrapped knuckles and complaining about the manufacturer didn't know the remove assembly method.How many of us have done a DIY job taking 5 times the first estimated time BUT after finishing and having learnt the lessons could do the same in a much shorter period, and perhaps with a better result.