Isn't there something rather ironic about an article in the Grauniad on dodgy editing in another paper?
Why would there be ? 😕
Whilst I, personally, have experience of the Guardian editing one of my letters in ways which I would rather they hadn't (if I had wanted those bits cut out then I would have done it myself) I accept that all newspapers do it due to restrictions placed upon them by limited space and limited reader attention.
However, I assume that by your reference to the "Grauniad", you are in fact referring to poor proofreading. This was indeed a problem for the Guardian when it was the only national paper printed in Manchester. The proofreading and printing needed to be completed quickly so that the paper could be transported to the Capital and delivered to customers at the same time as it's Fleet Street rivals.
Which gave it a somewhat unique and deserved reputation of being littered with typographical errors. I believe the problem was resolved when printing operations were moved to London – a considerable time ago.
You really need to keep up with the news aracer.