Just tried this on Android Firefox with blocking via Pi-Hole and it’s working fine for me.

Yes, I manage my Raspberry Pi Plex/Pi-Hole/OpenVPN server using command line because, well, it’s Linux.

Also for work I manage Windows Server based systems and although this is a largely GUI based operating system, Command Prompt/Powershell are still tools I use daily to provide more control and depth over what I can do (bulk admin actions, for example).

I don’t really use command line out of preference - moreso because it’s the necessary tool for the job.