I think in general it is a culture problem.

Those of us that embraced managed languages, including for systems programming (Oberon, D, ...), know that we can be productive 99% of the time and just have to care how to do speed boost tricks on that 1% using profiler and low level language tricks.

In C and C++ communities there is a sub-culture of thinking too much ahead of time how much each line of code costs, thus speeding too much time with design decisions that actually have zero value in the context of the application being delivered.

The problem is not taking those decisions, rather taking them without validating if they are right with a profiler, or regard to the goals that have to be met for the application.

Beyond which any low level fine tuning, while fun, is needless engineering.