None of that has anything to do with the fact that the HTML standard--written and edited by all the major browser vendors--has declared the <center> element as obsolete.
Sorry, but if this is the only thing you were pointing out, then I don't see how
your comment is related to mine?
<center> was marked obsolete because it's not semantic HTML, and centering stuff
is the task of CSS, not HTML. It was not marked obsolete because a block-level
text-align-like property would be useless.
My comment was lamenting the fact that standard CSS does not provide a
compatible alternative, despite widespread implementation of the feature. Saying
<center> is obsolete does not resolve this issue.