Can I use the same argument of @D_Roopa_IPS (Firecrackers are not old enough practice/absent in "ancient" texts to count it as Hindu) for वाचस्पत्यम् कोश ?
वाचस्पत्यम् referred by Nityanand in his tweet is a work of 19th century. It is in "modern" category.
• Is Dr. Swamy an ancient person ?
• What is his credential to even speak on this topic ?
• How is he a leader ? Which govt. portfolio is he handling ?
Again it shows yr selective bias to prove yr point.