marc71178 said:
But does make it more innocuous and easier to hit.
Less likely to take wickets, maybe.
Easier to hit? No.
A ball at the top of off or good-length just outside is no easier to hit whatever the pitch.
It does change from batsman to batsman, of course it does.
And slower pitches make less-good balls also more difficult to hit - but we still get nice slow pitches sometimes, giving the medium-fast and slow-medium (Dharmasena, Kumble, Harris) the chance to do their stuff and get maximum credit for it.
What codswallop - it gives the team a quick start and immediately has the fielding team on the back foot. Besides, the pinch-hitter is almost never a tail-ender, it's a fast-scoring batsman.
And if he's good enough, he'll score runs - if he's not, he won't.
Pinch-hitting batsmen have been around for ages - most people trace it back to Mark Greatbach and someone for New Zealand in WC92, certainly the first time it was really pulicised was in WC96 with Jayasuriya and Kaluwitharana - but the fact is, the scoring-rates have only started to increase alarmingly in the last 3 or 4 years - at most.
The fact that these two things don't coincide means they can't really be linked.
I suppose yet again it's a coincidence that we see far more 300+ scores then...
No, it's not coincidence at all - it's just the fact that some of the newer bowlers to ODI-cricket aren't as good as some of the ones who've recently been lost to the game.