That is a bad idea, because some articles are updated constantly. I have one of them. Google bot saw it around 12 years ago for the first time, but I have updated and rewritten it a thousand times.

This isn't journalism, where articles never change. It's providing current information about a topic and the URL is a shopping window – it changes.

> but I have updated and rewritten it a thousand times.

All the more important to be able to find out what it used to say at important points in time, such as the day someone decided to link to it.

It's not a bad idea. It lets you reliably exclude results after a certain date, which is very useful for looking up old news for example.