His point is that you're managing alright because you live in a country where your ISP can give you a public IP address. The author lives in a country where that is not possible and accesses the Internet behind layers of NAT.
It's possible for Indian ISPs to buy IPv4 addresses and assign them to customers. Maybe not for $5/month but if you're willing to pay US prices (plus tax) you should be able to get US quality service.
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You can even buy a block, but the smallest one has 256 addresses.
What's the difference, other than port forwarding? Does NAT cause some sort of unique issue that makes existence miserable?
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