Should the Americanisation (or Americanization) of English worry us?
The use of the z there is archaic English which the Americans have preserved for example.
Me being me I’ve always been rather perverse about this of course. When at school I would deliberately use the z in order to annoy teachers, insist that it was just fine really. Which they would agree it was, if archaic. Now, writing largely for Americans, I insist upon using the s.
It’s the small things in life which produce the joy, no?