personally I couldn't care for twatter spam but if you really want it, they built the feature, just use the link box

And maybe read up about how markdown works.  It's a standard, you won't see the behaviour you are looking for in other renderers

It's not about how markdown works. Instead, it's about allowing original tweet format insertion in the posts and context with links.

Coinsreporter

it's just how markdown works, they shouldn't change it