Why was new(size_t s) { } deprecated in favor of an external allocator?

[Patrick Schluter]

On Wednesday, 14 October 2020 at 20:32:51 UTC, Max Haughton wrote:
> On Wednesday, 14 October 2020 at 20:27:10 UTC, Jack wrote:
>> What was the reasoning behind this decision?
>
> Andrei's std::allocator talk from a few years ago at cppcon 
> covers this (amongst other things)

Yes, and what did he say?
You seriously don't expect people to search for a random talk 
from a random event from a random year?