Those add ons are beneficial if utilized properly. Take 5% milestone CB. If you spend 10K every month during activation period, Effectively it's 3.8% CB. It's a great card for offline transactions upto 10K, 20K for grocery with addon and rewards rate till 8%.
Very few cards will give you such reward rate eg Atlas, Infinia, DCB, Magnus but they have high fee. Also These won't give direct cashback.
Next close alternatives are Axis Ace (2%) and Flipkart Axis (1.5%).
It all depends on how you utilize the card.