The problems you have with jekyll, pelican, et al is that you lose site-side search, 'related posts' (without some reasonably complex compile-side clobber), etc. etc.
Using extremely minimal PHP lets you deploy just as easily, you don't get too much of a performance hit (a hell of a lot better than wordpress, etc), you can still do search, related posts, forms, embedding, and all that.
PHP as a server-side 'clever templating' language really isn't that bad. It's only awful when used to build anything massivly complex (such as joomla! or drupal...), and that it encourages messy project design.