The big mess seems to be in the CSS/Javascript space, where fad frameworks come and go rapidly. There's more change than improvement. Visually, most web pages haven't changed much, and web development has become much harder.

But we can now scroll forever. Slowly and jerkily.

On the language front, we really should have had a replacement for C/C++ by now. We don't. D never got traction. Go is mostly for web back ends, where it has really solid libraries heavily used within Google. Rust looked promising but was taken over by the "functional" crowd and is doomed to Haskell obscurity. C++ itself is now trying to fake ownership tracking at run time, with mediocre results. The abstractions always leak because too many old things need C pointers. Java was supposed to replace C/C++ but became tangled in its own libraries and ended up replacing COBOL.

There's been some progress. There's now grudging agreement that the way to go is type declarations with some type inference. Having to type everything is too much of a pain. Not typing anything makes for unreadable programs. Function definitions really do need type info. So C++ added "auto" and Python added "advisory typing", moving both towards the center. Which is about where Go started.