Fundamentally it’s just a USB-> USB connector with only the charging pin. Not a complicated device.
I've been carrying USB condoms in my travel kit for 10 years. Very useful in USB ports in rental cars; those things always try to download all your contacts into the car.
Can that do USB-C charging at higher than lowest common denominator speed?
If you're that worried, strip open a small section of any USB-A cable and cut the data lines, and fix back up with tape.
While it works, it will charge slower.
You could also just put tape over the D+ and D- pins on the cable.
Just buy the cheapest cable from gas station and try to connect a phone with your computer. There's no way to hack you if the Chinese manufacturer decided to skim $0.001 off production cost and use no data wires.