I would imagine her agents are getting her to promote herself... she's 'big bucks' and they get a nice chunk of her "obscene" earnings. Striking whilst the iron's hot, so to speak.
The entertainment industry is a business like any other business and as long as people are prepared to pay to hear her in concert or buy / stream her recordings, she'll continue to get rich.
And if the tabloids are anything to go by, we are a bit of a celebrity-obsessed nation, lapping up all the details of their lives - even the mundane bits.
I've often noticed on social media - Facbook in particular - that any column inches about a celebrity's exploits attracts hundreds, often thousands, of comments; yet an article about something that affects all our lives, like social care or the NHS, only has a handful of comments.
Bread and Circuses.