Comparing pytz.timezone instances

Question

I need to compare pytz.timezones for equality, and the behavior I'm observing is quite unintuitive. I've read a lot about Python time zones, pytz, zoneinfo, LMT, etc., both on SO and generally on the web. The behavior I'm concerned about does not seem to be obviously related to the typical concerns people have with pytz and solved similarly. The only workaround I've found is comparing the pytz.timezone.zone strings, which is clunky. The two examples below show the pytz.timezone comparison behavior. Used: Python==3.9, pytz==2022.2.1, pandas==1.5.3. The behavior of zoneinfo.ZoneInfo objects is, in contrast, sane and intuitive.

Example 1, LMT:

>>> tz = pytz.timezone("America/Chicago")
>>> tz
<DstTzInfo 'America/Chicago' LMT-1 day, 18:09:00 STD>
>>> tz.localize(datetime.now()).tzinfo == tz
False
>>> pd.DataFrame({'t': [tz.localize(datetime.now())]}).t.dt.tz == tz
True
>>> pd.DataFrame({'t': [tz.localize(datetime.now())]}).t.dt.tz_convert(tz).dt.tz == tz
True

Example 2, CST:

>>> tz = pytz.timezone("America/Chicago").localize(datetime.now()).tzinfo
>>> tz
<DstTzInfo 'America/Chicago' CST-1 day, 18:00:00 STD>
>>> tz.localize(datetime.now()).tzinfo == tz
True
>>> pd.DataFrame({'t': [tz.localize(datetime.now())]}).t.dt.tz == tz
False
>>> pd.DataFrame({'t': [tz.localize(datetime.now())]}).t.dt.tz_convert(tz).dt.tz == tz
False

I expect no False comparisons above, which is exactly what I get if I use zoneinfo instead.