I doubt we’ll ever know if it’s real, but she didn’t have much to gain with it, considering her fan base. She still had the option to remain silent, as had worked fine for her in the past (until about a year ago)...so I do think it’s real, unfortunately.
It will be interesting to see how her next album does. I do think that she may have alienated the part of her fan base that is conservative. It’s probably more prudent for a singer not to take political positions.