Generally yes. I see rates between 100-250/hr and I know (in person) a number of developers with higher rates.
However, hardly anyone will talk about them publicly, especially online. Part of the reason is there's almost no value to gain from discussing rates in public and a lot to lose.
To answer the second part of your question, I have a large and varied skillset covering nearly every part of starting, growing, and operating small and medium sized businesses on top of twenty years of software development experience and (most recently) a significant body of practical machine learning experience. I can comfortably step in for mid to senior level UX, marketing, strategy, development, and ML roles.
In turn, clients simply describe business problems to me and I deliver entire solutions for them, employing a mix of those skills.
These problem definitions generally reduce down to something like "make me $1,000,000 with 100 hours of work and a 25% chance of success". When you look at it from that vantage, it's not difficult to see how high hourly rates can be justified. I can charge $250/hr and be a highly efficient choice compared to alternatives.
Obviously I also use those skills on my own products as well. But consulting provides interesting experiences and additional streams of revenue.