^ I think people are saying there is no reason Carrie can't have another hit like Southbound in her career still, not saying they want another song just like that. Big difference. Personally, Southbound might be a safe choice in general, but it was refreshing for Carrie's career as she never had a fun summer single like that.
Mama's Song, Undo It, Smoke Break did well on the charts, but that still didn't stop some fans from maintaining some dislike for those songs all these years.
As for Drinking Alone, maybe I wasn't on here during that chart run, but I didn't see much criticism for that song. On other forums, other than comments that it may have sounded out of place on the radio, I don't remember a lot of dislike for the song when it didn't do as well as hoped. At least not as much GS. Also bear in mind that DA was the last single for an era that doesn't have much momentum aside from Southbound hitting right.
Low would have been a risk well worth taking, imho. Even if it can't even get to Top 20.