Do 'Naidu' title belongs to Kapus in Coastal Andhra? As they claim?

The Answer is big 'NO' because look at the below given examples, where these people are from varoius communities and caste groups but they all have a suffix Naidu to their names and they are from Coastal Andhra and else where, with this it is evident that the claim that the title 'Naidu' belongs to Kapu's in coastal andhra is fake and misleading....!!! 

Eg: Evidences from the contemporary times...!!!  

1. LV Rama Naidu (Lagadapati Rajagopal father (Kamma)) - Vijayawada - Coastal Andhra
2. Muppavarapu Venkaiah Naidu (Kamma) - Nellore - Coastal Andhra
3. Dr.D.Rama Naidu (Kamma) - Karam Chedu - Prakash - Coastal Andhra
4. Vasireddy Venkatadri Naidu (Kamma)- Amaravati - Coastal Andhra
5. Ram mohan Naidu (Koppala Velama) - Srikakulam - Coastal Andhra
6. Palnati Brahma Naidu  (Velama) - Guntur - Coastal Andhra
7. GD Naidu (Kamma), Scientist from Tamil Nadu
8. SM Subbiah Naidu (Kamma) Music director from Tamil Nadu 
9. My Own Grandfather Subrayulu Naidu (Kamma) of Vellore, Tamil Nadu
10. Bollineni Munaswamy Naidu (Kamma) of Tiruttani District, Tamil Naidu 

Therefore the claim that Naidu's of coastal Andhra refers to Kapu's is a false claim and is misleading...!!!