I use symbols from the EELIB all the time.  I picked an LED symbol and put it in my design.  After placiing my order with JLPCB I was surprised to find a charge for manual assembly.  The cad program had inserted an LCSC part into my design without telling me.  I was going to assemble the led myself with a special mount. I have used the EELIB on many designs and it has always just given me a symbol.  And if it is going to order a part from LCSC it should tell me.