Very liquid sourdough?

Hi,
I read that most of you use a sourdough with 100% hydratation, just like me.
Recently I came across a more liquid sourdough (130% hydratation) that doesn't actually rise (a lot). It has the consistence of yogurth but it thickens during refreshments. It's supposed to develop exclusively lactic acid (none of acetic acid), and to grow the yeasts better

Did anyone ever use it? Can you share your experiences? Can you explain the differences?

Thanks,
Nico