Hello everyone, I'm not particularly familiar with the hypno community but I've been tearing through stories written by The Pediatrician on the now defunct/archived Piper's Domain site. I was saddened to find that the "Programming" series was never completed on there. He was a great writer of loli hypno stories and I'm just wondering if anyone out there is aware if he moved somewhere else or just fell off the face of the internet once PD shut down.

www.asstr.org/~Piper/xpediatricianx.html

As far as I can tell, no. Which is a shame, a majority of the writers on Piper seem to have disappeared since the site went down. It catered to a niche, but a wonderful one that I'm interested in.

And as far as I can tell, there is no replacement for Piper. Probably not even an .Onion. Which is once again a real shame, especially since I've been entertaining a loli monster girl idea. But since it's loli...

Definitely a shame - there's still tons of excellent content all over ASSTR (enough to last you several years if you dig hard and keep a lot of bookmarks) and the site continues to be hosted without any sort of legal issues, but unfortunately the infrastructure is so outdated and many site functions have become so broken that the authors who continue to somewhat regularly update (like Alvo Torelli who still posts at least a story per month, as well as the excellent AnonyMPC, who went MIA for about a year but at the end of September finally updated) are a dying breed.
I think a replacement can be made so long as someone pays attention to what ASSTR has been doing right for decades as far as staying semi-online and just puts in the effort to create a new site using a modern framework, but unfortunately that's a big time and cost sink for anyone to handle. In the meantime I've been saving the complete pages of any stories on ASSTR that I think are great and will want to read again.
There was a recently created small-scale .onion I came across a few months ago called Y.E.F.A. (Your Erotic Fiction Archive) but the address stopped working within a couple weeks of me finding it. Don't know if it's still online at a different address but it seemed like it was one guy handling all the submissions via e-mail, which is obviously even more prone to falling into stagnation and disrepair than a ASSTR-like system of a FTP server where users maintain their own mini-websites. I'd think ideally a replacement would basically be an Archive of Our Own clone where stories are easily found and filtered by tags and most processes automated.
If you're just looking for a site to host a story in the near future, though, Adult-FanFiction has zero qualms whatsoever with loli, although their site functions also haven't been updated in a decade and the page at the root domain is broken (which isn't a great look) it still has a community who posts content regularly and keeps the servers up, and it's easy enough to create an account and post something. People will generally leave reviews if you write something good. Doesn't need to be fanfic either, the originals section has plenty of really kinky/taboo stuff
original.adult-fanfiction.org/index.php

Well, not all of us have disappeared. Mesmer's Bauble hangs around here. I've transitioned more into the art end of things and can generally be found on Pixiv. Alvo Torelli has his own little archive on ASSTR. So we're around, you just need to dig to find us.