Roy, W7EL wrote:
"So using the same analysis, you`d have to conclude that vertically
polarized waves can`t propagate by ground wave either."

I`ll turn to the authors for a source of my contention.

Terman says in his 1955 edition on page 803:
"The ground wave is vertically polarized, because any horizontal
component of electric field in contact with the earth is short-circuited
by the earth."

And on page 808, Terman says:
"Examination of these vector diagrams shows that with a perfect
reflector the horizontal components of electric field will exactly
cancel each other at the surface of the perfect conductor. In contrast,
the vertical components of the electric field of the incident and
reflected waves do not cancel, but rather add at the reflector surface
with small values of earth reflection angle."

Best regards, Richard Harrison, KB5WZI