I have the same thoughts. I think it's because they are not EEs and want to play with the material. A sensing resistor is trivial. https://www.digikey.com/en/a

I have the same thoughts. I think it's because they are not EEs and want to play with the material. A sensing resistor is trivial. https://www.digikey.com/en/articles/fundamentals-of-current-measurement-part-1-current-sense-resistors https://www.digikey.com/en/articles/fundamentals-of-current-...