It sounds great to write vector and font rendering in a few hundred or thousand lines of code. On the other hand, others have been writing orders of magnitude more code in orders of magnitude more time. I cannot believe that has been due to a wrong choice of language or approach. I much more believe it comes from supporting real-world standards and requirements. Loading fonts from various formats, lots of configuration, supporting more and more of Unicode, doing all that optionally with hardware support. That is the tedious part. It is not about how to implement Bresenham's line algorithm most elegantly.