no, they’re very different political figures in the moments they represent. Bernie actually advocated things working people wanted and spoke in any terms at all to elements of working class impoverishment and suffering (which is where his grassroots support came from), and for this was completely shit on and obstructed and smeared and stomped into submission by the democrat apparatus. He was not “offered” at all, he was a social-democrat compromise candidate who a huge amount of working people and left-leaners had mobilized for to push into the primaries, who the democrats so objected to they suffocated his campaign in the crib and smeared him in every media and shit all over his supporters as ‘misogynists’ and ‘bernie bros’ and all sorts of other nonsense and continued blaming them after Hillary lost. It was a fundamentally different dynamic.

Walz is about 80% more right wing than Bernie (who himself is a liberal imperialist to start with) and rather than being mobilized for by literally anyone, was instead hand-picked (after their first choice got outed for covering up a murder) by the democrat establishment to be actively dangled like shiny keys by the in front of a populace who were already compromising with Bernie and at this point would sooner see all of the lead dems keel over from heart attacks.