If you come to power through an election, and then lose a subsequent election, do you step aside as the voters have requested? And, if your successor dismantles your handiwork, do you accept that?
Okay, that's two questions. I would be disinclined to believe anything a "Democratic Socialist" says. It's almost certainly a one-way ratchet. And if you doubt that view, consider the way the Loyal Opposition has been behaving in the past 18 months.