R devel - May 2021 - Should all.equal.POSIXt respect check.attributes?

Hello,

Since bugzilla #17277
(https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17277) was
resolved all.equal.POSIXt now compares timezone attributes. Comment 4
(https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17277#c4) in that
ticket makes reference that both arguments check.tz (which appears to
have actually been implemented as check.tzone) and check.attributes
should disable this checking. However looking at the implementation
(and behavior with a devel version of R) I'm   finding that
check.attributes is not disabling the timezone checks.

Should the more general check.attributes disable this check (as well
as being able to specifically disable only timezone checks with
check.tzone)?

-Jon