User blog comment:Ducksoup/The Future of Infoboxes on Wikia/@comment-5590118-20150825212321/@comment-24473195-20150826084426

I think this pdf by the WMF will probably explain it better than I can:

https://wikimania2015.wikimedia.org/wiki/File:Templates_are_dead!_Long_live_templates!.pdf

Strictly put, this is like the Leaning_Tower_of_Pisa. There is a core problem with wikitext, and it is not something a single parsefunction can solve or even mitigate properly.

Your suggestion is like using glue to fix a tool. Sure, sometimes it will work, but sooner or later that glue dissolve or the tool will break again and all problems will come back.