It's not merely that the raid as a whole is simpler for today's seasoned classic gold wow players. Players do triple or even quadruple the numbers of people's DPS back then so even a pre-nerf C'Thun would readily collapse. It is an issue of the playerbase being more skillful, and knowledgeable.
When you take a close look at the damage logs of any C'Thun kill right you can now see that is true. You have got players doing between 200 to 300 dps on managers, and since this can be Classic WoW you understand they're watching a movie in their second screen while they do it. It is hard to find precise numbers, as most people weren't keeping tabs on dps 15 decades back, but according to Minmaxed, it had been far less than what we are seeing today:"[There is ] a general consensus among individuals who did perform back is that it had been'way less.' The concept that pre-nerf C'Thun is too high of a damage check is foolish."
Practised on our own client for several weeks before it went live, developing strategies and getting knowledgeable about the litter and experiences," Minmaxed said. "I believe the majority of the guild would have enjoyed C'Thun to be more difficult, but when speaking about the whole'mathematically impossible' C'Thun I do not necessarily believe it was as much about maths because it was about the encounter being calmed with tentacles spawning inside of walls and shining your stunt while being out of line of sight"
Those germs look like the main barrier in the way of Blizzard placing C'Thun into cheap wow gold classic in his original form. But here's my pitch: Leave 'em in.