I checked the first 4 links here on archive.org, with no luck.
I don't think I've ever found a G+ post there. Most I tried used numerical ID.
Even searching for posts under my username found nothing.
It claimed to have found one successful retrieval of that exact URL with nothing underneath it, but it goes to a 404 page (and doesn't offer to search for pages under that URL, #wtf).
This at least does seem to have some content, but it's all just snapshots of my home stream -- and the content is often quite badly truncated.
Is there an index, anywhere, to what is available?
Also, Google needs to stop returning a 200 code for G+ URLs, because archive.org keeps claiming there's live content and offering to archive it... 
@woozle Give me a few.
Could you confirm your primary blog / social (Friendica?) and _one_ RSS/Atom feed?
@dredmorbius I currently have no posting venue that provides RSS, as far as I know (unless Hubzilla does, somewhere).( :-/)
I currently have no primary venue for long-form posting. I occasionally use Hubzilla -- at which I am @woozle (https://hub.toot.cat/channel/woozle) -- but I've found it frustrating in a number of ways that keep me from using it much. Friendica is down for the count because the upgrade process is broken. (:-/ again)
Some G+ URLs (some already tried, most not; URLs normalized per your instructions to the best of my knowledge):
https://plus.google.com/102282887764745350285/posts/3XyywL1fo6Y
https://plus.google.com/102282887764745350285/posts/H3kGtRLGPGD
https://plus.google.com/102282887764745350285/posts/7bXKTFB6TRe
https://plus.google.com/102282887764745350285/posts/fHDGf2kRh45
Some on the more recent end:
https://plus.google.com/102282887764745350285/posts/91HyuUpP9R7
https://plus.google.com/102282887764745350285/posts/QdSEi1StdoV
https://plus.google.com/102282887764745350285/posts/W8ZghvrKx7w
@woozle@toot.cat You might also try appending "?hl=en" to your URLs.
At least some archival stored that rather than the generic form of the URL, see:
The unqualified URL is not found:
https://web.archive.org/web/2019*/https://plus.google.com/104092656004159577193/posts/4REjF1smHpE
