The sort of Protestants who use the King James Version bible (and some even make it a point of belief that this is the only version allowed) also normally say "Holy Ghost". I can understand Ladislaus not wanting to be mistaken for one of them.
On the other hand, there is no question that that the change from "Holy Ghost" to "Holy Spirit"" is associated with the "reforms" of Vatican II.
I have a solution; we can pray in Latin only. :)
Regardless that it really does not matter, as LT said, "Holy Ghost" is traditional, the fact is, saying "Holy Ghost" is so traditional that normally, we would only expect to hear "Holy Ghost" in the NO and other prot services when they are attempting to make their preaching appear to be more orthodox, forceful, or in some way more authoritative.
The terms "Holy Spirit" and Holy Ghost mean the same thing so either is entirely fine to use. If it weren't for the NO replacing the traditionally used "Holy Ghost" with "Holy Spirit"
for no other reason than "change for the sake of change", "Holy Ghost" would most likely still be used most of the time, just as it was throughout Church history prior to V2.
This issue is right up there with NOers and prots who, as a rule, say, "the Virgin Mary" instead of some variation of "Our Blessed Mother", or they always just say "Jesus" rather than some variation of "Our Lord". There is nothing wrong with this either, many saints occasionally said the same thing, and many priests have used the same terms on occasion.
Back in the day when there was much confusion, we kinda used "Holy Spirit" as a means to identify possible NOers, but there is nothing wrong with it. As Jayne correctly said, we associate it with V2 because it was during that time that it became the norm.