> If you already have the 32-bits value, there is no point in parsing it, so there is no point in supporting it in the address text parser.

There is a point when the only interface to that program is via text. You still have to convert the 32-bit value to text, but there's a difference between that and converting it to IPv4's dot notation. The former is simpler.

> It's not worth saving typing 4-5 characters from times to times.

I don't think the main users of the feature are people manually typing those addresses.

> Before reading the article, I would have assumed for example that 127.1 would be 127.1.0.0, not 127.0.0.1.

But then it wouldn't be a valid IP.