I recently had to do some basic sysadmin stuff over tor and I disagree with OP.
Two things that failed mieserably, fetching a file that was just shy of 5M, and a reverse SSH tunnel.
The SSH tunnel was unusable, it would only last for minutes at the most. I wish I could use mosh but that requires UDP.
The file transfer was actually done with curl and the file was often incomplete.
This was all done within Europe where we have the highest concentration of tor nodes.
So no, I don't think tor is appropriate for sysadmin tasks.