I know she had a Chrissy fit when Rush used her song...but you’re right, we often change. Heck, I almost entered the priesthood and am now an agnostic. I can still recite the Sucipiot from the Latin Mass from back when I was an Altar Boy...and then, after 2000 years, they changed it to English. :{)
Ad Deum qui latificat ... etc.
I seem to recall that the issue came up back in the 90s, where Rush had to stop using that theme music because her publisher was insisting that his use violated the copyright, or something similar. As I recall, Rush eventually did get permission from her to use the theme, on the basis that her parents like to listen to him, so he can't be all bad.
I used to be an agnostic.
But now I’m not so sure.