I think it is some design decision to display Bool vectors as 1 (true) or 0 (false) like in
julia> x = ones(Bool,5)
5-element Vector{Bool}:
1
1
1
1
1
julia> x[1]
true
julia> y = zeros(Bool,5)
5-element Vector{Bool}:
0
0
0
0
0
julia> y[1]
false
Nonetheless, there is a little inconsistency when displaying individual entries of the same vectors as true/false.