Parallel Ensemble Simulations: Example of a new problem type?

[npbarnes]

After describing the arguments to EnsembleProblem there are two examples of for prob_func. Here's the exact quote:

One can specify a function prob_func which changes the problem. For example:

function prob_func(prob,i,repeat)
  @. prob.u0 = randn()*prob.u0
  prob
end

modifies the initial condition for all of the problems by a standard normal
random number (a different random number per simulation). Notice that since
problem types are immutable, it uses .=. Otherwise, one can just create
a new problem type:

function prob_func(prob,i,repeat)
  @. prob.u0 = u0_arr[i]
  prob
end

The first example demonstrates calculating a new random initial value and inserting it into the existing problem using .=. Nothing wrong with that. The second example is exactly the same except it uses the index i to index a pre-computed array. That's fine, but it doesn't seem to be what the text above it is talking about. Shouldn't the second example demonstrate creating a new problem? E.g.:

function prob_func(prob, i, repeat)
  ODEProblem(.....)
end

[ChrisRackauckas]

It should probably demonstrate remake.