Iliad says Latest commit 0be1977 on Jul 18, 2017. Seaside says last commit 24 August 2019. Any actively maintained web framework that will work with Pharo 8?
That is considered active. The Smalltalk community is far smaller than other languages and web development is a small subset of that community. So you won't see nearly the frequency of commits of projects. Also, the major web frameworks are pretty stable these days so most of the action is in the integration of support for various client-side Javascript libraries. Those are often published as separate projects.
keep in mind that smalltalk is freaking ancient and like most useful but freaking ancient things in unix, most of the stuff "just works" and doesn't need constant poking.
Also, Smalltalk offers a much more transparent development environment. So, you're not writing code that goes into a black box and produces results. You can see what's going on in the box and make sure its doing it correctly.
also, the Squeak by example book (i think Pharo by example is a fork of this) very quickly starts showing people how to write tests. So the mentality isn't "oh, yeah, i guess i could add tests" it's "oh hey, tests are part of making smalltalk code" so you've got that going for it too.
combine those things with the smaller community, and thus a much more narrowly defined set of "needs" for a web framework and yeah, it doesn't get poked constantly.