@gemlog @lupyuen - There's room for more than one "right" answer to most problems. Just be sure to frame the problem.
Even yesterday's PC is unquestionably a better PC than any Pi-like substance. My always-on Pi (3) monitors smokeping, telemetry from several devices, PiHole, and several more tasks. The comparison of electricity consumed by a PC is laughable.
Turns out that "Pi" grew to encompass a few lines: education, hardware hacking, net appliance/server, workstation, etc. Not all are $35.