You can't buy tempered, melted chocolate easily. If you want to cast it into a mold, you must melt and temper it or melt it very carefully.

... Using a hand blender is using a machine for a job too, isn't it?

GP's point is that responding to an aside about how to do something with a snarky "or you could just buy a dedicated machine" will come across as obnoxious. This should be obvious to you or anyone.

What's obnoxious is someone claiming they have found the easiest way but then refusing to accept an easier way.

It's using machine for the job, which is different than buying a machine for the job.

A hand mixer is cheap and has endless uses. A chocolate tempering machine has a single purpose. Makes sense to get one if you're making chocolate in large quantities.

A tempering machine costs hundreds of dollars and wouldn't fit in my apartment kitchen. The hand mixer was ten dollars and fits in my drawer.

Also, this is advice to anyone who wants to try it for themselves. Isn't "buy a hand mixer and some diffraction film" an easier onramp than "buy a whole tempering machine?"