Ben, seriously, you don't know what you're talking about. You claim that 130kph bowlers aren't successful in the modern era, but Pollock 421 Test wickets at 23, and 393 ODi wickets at 24 at an amazing economy of 3.67. Then there's McGrath, arguably the best pace bowler of the past generation, Stuart Clark's been immense in his introduction to test cricket, Matthew Hoggard has been one of England's best bowlers for years, there are many fast-medium bowlers who still destroy test attacks.
Also, you've obviously read nothing regarding Malcolm Marshall, he is widely regarded as the most dangerous of the 4 West Indian seamers. His deadly accurate bouncers, late swing, and decent pace considering his height. I'd reccomend you read about the bloke before claiming he'd be ineffective in the modern game. Try reading the following articles:
BBC Article
Cricinfo Article
If you'd read the articles you'd realise that Marshall was far from the 130KPH bowler that you're making him out to be. He was out and out quick, cricinfo has him down as a "Fast" bowler, not "fast-medium". I think many of the West Indian players and fans from that era would take serious offence from your blatent disregard for the quality that Marshall possessed. Try gaining some knowledge on an issue before parading your biased views