Using containers on Linux has basically no performance loss compared to running on the host. They share a kernel and nothing needs to be virtualized (unlike containers on macOS and Windows), so anything you run in a container is basically the same performance as running it on the host.
I still agree though: using Nix is better than using Distrobox for many other reasons.
IRS hold times are criminally long. “30-60 minutes” is what the IVR will say, but you’ll likely be waiting longer.
Combine that with the fact that they’re only taking calls Monday-Friday, and that means that if you’re working class (the only people that are actually taxed), you’ll be lucky to get through on one of your lunch breaks for that week. Otherwise, you’re screwed.