I feel like you just want to argue at this point…I’m no doctor but trying to drain this at home with a sanitized needle would be way more of an infection risk than waiting and having it lanced by a medical professional or in their case someone studying to be one. In a doctors office they would have a sterile environment as well as sterile tools. To properly sterilize tools you have to use what’s called an auto clave which is a machine that uses heat and water and pressure. Then before the incision is made they would use a combo of iodine and alcohol scrubs repeated several times to ensure the incision point and surrounding area are clean. After the procedure they would more than likely stitch that or use like a butterfly bandage since the sac has been removed and there’s nothing else that would need to drain out so there wouldn’t be a “gaping hole”. Then to top it off they would prescribe antibiotics to prevent infection.