[hellgas00]

You last point is the most pertinent. Labour didn't win a majority because they offered compelling platform ideas, they won because the Cons failed to deliver on their platform and Reform UK exploited that failure to split the conservative vote.

Opinion polls already have Labour and Cons at an even tie with Reform UK doubling their overall popularity in just 6 months.

All this to say I wouldn't want to suggest that the trend towards nationalist politics ended with a Labour majority but rather that the Conservative Party wasn't sufficiently nationalist enough to entice public sentiments away from Reform UK