In database engines, where C++ is pervasively used, modern C++ is a vast improvement over legacy C++. It is much simpler and safer. Writing a current C++20 database kernel in the equivalent legacy C++ would require several times more lines of code, and that code would be much more difficult to maintain aside from the much greater volume. A database engine implementation makes very good use of modern C++ features, the idiomatic legacy C++ equivalents were often very ugly and very brittle. I've done both.
I have never worked on games -- maybe that domain has simpler internals -- but there are important categories of C++ software outside of games that unambiguously benefit immensely from the modern C++ features. In databases it is common to ride as close to the bleeding edge of modern C++ as is feasible because the utility of the new features is so high.
I have never worked on games -- maybe that domain has simpler internals -- but there are important categories of C++ software outside of games that unambiguously benefit immensely from the modern C++ features. In databases it is common to ride as close to the bleeding edge of modern C++ as is feasible because the utility of the new features is so high.