FleshLight is a brand. Every Fleshlight is a stroker but every stroker is not a FleshLight.
When we talk about Fleshlights we use this as a blanket term which is not the case. Fleshlight has been about since 1998 and was named from the flesh like feel of the sleeve and the look of the hard outer case that looks like a flashlight.
The inner sleeves come in different styles some look like vaginas others look like bum holes and some even look like mouths. Many of the sleeves are moulded from famous content creators.