Yep. Great Writer boost is much like the Scientist in that after a very short period you get more raw bonuses from the boost ability. Outside of culture victories where you need the tourism, you can often safely just use the boost. Same thing with Artists, but I find them a bit more difficult to analyze. Golden Ages are temporary while +2 culture is consistent. Generally I will make the works until I run out of artist slots (quick if you aren't running cathedrals, don't go for Sistine) and then burn them from there. Musicians are low priority. I'd even argue nabbing one or two quick culture CS alliances will do more for you in regards to Ideology pressure than great works. They potentially come quicker which means more culture stockpiled early on.