I think the key issue here is not actually that these two tests ruin Ind-Pak cricket, because obviously they don't. The point is that if India and Pakistan wish a cricketing history to rival the Ashes, this is the wrong way to go about getting it.
The last few series were a step in the right direction. Finally, India and Pakistan were playing regularly, high standard, competitive test series. People were watching, and the rivalry was developing a history. This series killed that, at least for the time being. Now, people are looking back over the history of cricket between India and Pakistan, and the last few series look like an aberration, rather than a move forward to a genuine great rivalry.
The Ashes might have been relatively uncompetitive for a decade or so, but it was still worthwhile cricket. England competed, Australia played well, there were legendary performances, memories, and so on. It wasn't a complete and utter waste of time like the current series is. The period of Australian dominance of the Ashes had the Gatting ball, Butcher's 170 odd, Waugh's last ball century, McGrath and Gillespie's 7-fers in 1997, England managing upset wins and Australia performing brilliantly and demolishing competent opposition, and many other things. If those things hadn't happened, cricket would be worse off for it, and some one-sided series didn't diminish the history of the Ashes.
All of those things add to the history of the series. In fact, the mere fact that Australia had dominated for years made the series last year even more riveting, as it was England's chance to turn it around. What does the current series between India and Pakistan offer in terms of memories? What does it add to the history of the series, or to the rivalry between the teams? The simple fact is, unless the final test is an absolute classic, we'll look back on this current series when it is over and wish it had never happened. You can't say that about any Ashes series in recent times, no matter how one-sided they were.
I think that was the point of SJS's post.