Your views of bike activists do not match my experience.

> It's always cringy when bike activists just assume that everybody can get to work on a bike fast and without sweating.

My experience is that people tend to have an inaccurate view of what bike activists believe. I think few would say that most people can switch to cycling without major issues.

As for sweating, my experience is that cyclists tend to argue that some sweating is acceptable, not that people won't sweat. I can recall some people discussing how to reduce how much you sweat to a minimum, but I can't recall anyone claiming that you won't sweat at all.

> But the whole discussion tends to veer into fat shaming real quick.

Having participated in and observed many conversations about cycling, I can't recall that happening once. Can you point out an example?

With ebikes these days, you probably can. And you can generally adjust how much assistance they give to match your circumstances.