This has existed for years already, is used widely, and IMHO looks way better than this dull attempt. I see no good argument in the campaign website for using this new one instead.
...and this latest proposal certainly isn't either of those things.
This logo is really unpopular
Source? I've only ever seen a handful of strawman arguments that "I'm not offended by the vague resemblance to a pentagram/use of rainbow colours implying LGBTQ+ support, but somebody might be", but its fairly wide adoption suggests that most people — myself included — actually like it.
This is the first I'm hearing of any issue with it resembling a pentagram, the criticisms I've heard involve the design in general not looking professional, not scaling well, and lacking a unique palette.