Yes No multimedia programs, cause I am a mathematician and for pdf I use pdftools; so no Adobe also; started with Slackware in 2007 after an abysmal windows period from 1991 till 2007; now I use openbsd and emacs simply rocks and is rock solid on openbsd.
I also think they're vastly underestimating the amount of stuff that needs to be configured on a new mac host.
My office workstation (Arch Linux) and home desktops/servers (all OpenBSD) can be installed and configured repeatably in ~5 minutes flat.
I literally have an ansible playbook that pulls in my dotfiles and installs a list of the packages that I want. That's a hundred times simpler than setting up my work laptop (Mac) for development, where not only do I have to install xcode dev tools and homebrew and the packages that I want, but most of the packages that I install need additional configuration applied to work correctly.
How is your R setup in OpenBSD? Like what software do you use in tandem when coding R?