Because people are being paid big money to design something that is seemingly inherently unsafe.
Where's the official confirmation that it's shared space?
Even the idea of shared space has been binned off in the UK for being unsafe.
The UK Government was recommending a moratorium on all new shared space schemes in 2017, meanwhile the crayonistas were busy ploughing on regardless!
First job for the next DOI Minister is to urgently review the status of the Prom and clarify what this cock up actually is.