WordPress is rather big, having more than 200K function calls on a typical request to a blog post. However, when using the default Twenty Fifteen theme, the performance is not that bad, as you can see from http://ldr.io/1cbbomp (VPS server with 3CPUs and 4GB of RAM).
I've just checked your blogging engine and it looks very minimalistic. I like it.
Thank you! Yes you are right! WordPress is huge! but not everyone need all the functionality... let's just say 10% of current WordPress users just need a simple blogging platform without all the widgets... then I think 1K function calls should be enough!
Anyway, I love WordPress and do not compare my hubby project with 10 years of 1000+ developers time!
I've just checked your blogging engine and it looks very minimalistic. I like it.