A useful task isn't a fixed thing though. Everything the 2012 computer did you can still do today with the same amount of ram we had back then.
The PC stopped existing in isolation, for most useful tasks now, it needs an Internet connection.
We don't _need_ that much ram, we just found new things to do with more.
It still does all the things I want it to do, including using modern websites with modern browsers on modern operating systems (including Windows 11).
The T530 was released in June of 2012.