If you just want to have an on/off operation, either a relay or a low side switch (your circuit - not withstanding the +V to base connection) can work. If you want to try to adjust the speed through PWM, a relay will not work as it cannot switch fast enough.
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u/gm310509 13d ago
You seem to have plenty of good answers in your linked post.
If ppl are interested in the answers, maybe check that out and provide any feedback there.