It seems to me that you can, from within the terminal that it provides, I supposed depending on what shell you run within the emulator. Your example even shows you running tail, so I expect it's running some sort of shell I'd expect screen could be available on.
Unless, this terminal emulator is missing specific features that mean screen doesn't work in it, which would make me feel the definition has been stretched a little here.
Either way, I have to heavily agree with duskwuff's take:
> They're both pieces of software which implement or interact with terminal emulators; I think some deconfliction is warranted here.
Edit: I've learned from a different comment [0] that the latter is indeed the case. This isn't really a terminal emulator.
Unless, this terminal emulator is missing specific features that mean screen doesn't work in it, which would make me feel the definition has been stretched a little here.
Either way, I have to heavily agree with duskwuff's take:
> They're both pieces of software which implement or interact with terminal emulators; I think some deconfliction is warranted here.
Edit: I've learned from a different comment [0] that the latter is indeed the case. This isn't really a terminal emulator.
[0]: https://news.ycombinator.com/item?id=43438797#43439716