I was there last month. It's definitely changed over the years. A lot more mandarin speaking vendors. Ladies for hire more noticeable. More fortune tellers. The karaoke aunties were new - I didn't get what was going on there in terms of business model and my desire to preserve my hearing had me moving on before I could find out.
Yes, in general I've found more mandarin speakers in Hong Kong compared to when I came last time in 2018. I agree with the ladies, there are definitely more! Haha, I didn't get the chance to hear the karaoke aunties!