Has worship of The Cailleach changed in modern times?
Short answer: I don’t know.
Long answer: Information about The Cailleach is so much steeped in legend, and has been incorporated with incoming religious and spiritual practices, both in Scotland and in Ireland that we have no real idea of how worship of The Cailleach may have been in ancient times compared to how it may be today.
We can however take some clues from what we do know, or have speculated about over time.
What modern cultural issues are closest to The Cailleach’s heart?
Being as She is, ancient enough to be apart from most modern world cultures, the Cailleach tends not to worry overly much about cultural issues. She predates the Picts and the Celts. She was there to greet the Fomorians and the Tuatha de Danaan. She has seen people come and go along with their cultures.
I would say that the biggest issues that have caught The Cailleach’s attention in modern times are not so much cultural as environmental.