Yes!
Environment Info:
System:
OS: Linux 5.0 NixOS 19.09pre173166.373488e6f4c (Loris) 19.09pre173166.373488e6f4c (Loris)
CPU: (16) x64 AMD Ryzen 7 1700 Eight-Core Processor
Binaries:
Node: 8.15.1 - ~/.nix-profile/bin/node
Yarn: 1.15.2 - ~/.nix-profile/bin/yarn
npm: 6.4.1 - ~/.nix-profile/bin/npm
Browsers:
Chrome: Not Found
Firefox: Not Found
npmPackages:
react: Not Found
react-dom: Not Found
react-scripts: Not Found
npmGlobalPackages:
create-react-app: 3.0.1
create-react-app --typescript foo, observe that it throws error: unknown option--typescript'`create-react-app foo --typescript, observe that it creates the project successfullyThe project would be created successfully
The command threw an error, saying --typescript is an unknown option

The documented usage indicates that the project directory must be specified first. From npx create-react-app --help:
Usage: create-react-app <project-directory> [options]
Although, we aren't required to supply a project directory for the version and help commands. The error you're experiencing appears to be the intended behaviour.
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I understand this is "expected behavior" but it's a bad user experience nonetheless.
Most helpful comment
I understand this is "expected behavior" but it's a bad user experience nonetheless.