Why do we see so many more posts about Django compared to 'modern Perl framework'? Python has killer features like simple syntax and developer familiarity. Django has GeoDjango.

This isn't even a question to me, but to the blog author. My. Point is about order of steps in the rewrite. It is not harder to rewrite first, redesign second, it is easier. I've done it multiple times in c++/c#, perl/python, php/python, r/python.

One consideration to switch from Perl to Python was that it is easier to find Python/Django developers because more young developers learn Python than Perl. Perl developers (at least in Austria) are mostly seniors and thus most of them already have a good job. (And do not want to change jobs) And a mature Perl developer is more expensive than a young Python developer.