"populist", just like "right wing" - those terms that are usually only used as a loaded insult by those with a lefty or authoritarian agenda.Straight from the populist book.
Shame that those populists are just the establishment.
But don't let that bother you
If a politician is attempting to please the population then I'm happy with that, it's what they're supposed to do. If this makes them a "populist" then you need to think about what the alternative approach would be - doing the opposite of what voters want, or just completely ignoring their views?