The general idea was the same though. An international organization is useless unless all the great powers are voluntary participants. But the great powers won’t participate in a organization that works against their interests. Therefore, the organization needs to kowtow to the interests of all the great powers.
The only thing about that that’s changed from 1945 to 2023 is the criteria for being a “great power”. Then, it meant being a winner of WW2. Now, it means having a large nuclear arsenal. The fact that there’s a very strong correlation there is of course not a coincidence.