BUT some people do have an interest, and really, that is all that matters 
On top of that, there are actual use cases, like I eluded to in xBT quick question For a Pentester / Red Teamer etc, an implantable LED would be a fantastic tool, especially a 2in1 HF / LF. 
swipe a scanner, intel gained…success…
ALTERNATIVELY
Imagine if you had an xLED LF with storage in one hand and an xLED HF(xM1) in the other ( or the same hand, no conflict) swipe a scanner, intel gained…target employee to sniff their credentials…write their creds. to the implant, access facility. BOOM, Job done, 
dropped
( another 2 subtle implant hints dropped also )
Granted a limited market, but a market none the less; also likely there would be other practical uses i’m not seeing