Soi 4 has lots of hotels that many tourists will book without knowing the street is a gutter full of the absolute dregs of humanity.
Any woman walking alone there is not safe and faces being ogled, groped and accosted by all manner of dirt bags, particularly those from the Sub Continent and Middle East.
She was highlighting the problem and trying to save other women from going there by mistake.
But as usual, Thais are thin-skinned to any kind of criticism and arrest the messenger, rather than fix the actual problem.
Why don't they want to fix the problem? Because police profit from crime all along Nana and Sukhumvit.
They don't police criminals, they protect criminals. In many cases, the police are the criminals, and own the same bars.
It will never change, as it's deeply embedded in Thai culture from the very top to bottom.