Linus and Guido actively write code and merge patches for their respective patches.
Name some impactful decisions he has made recently. Your comment does an immense disservice to Linus and Rossum.
A while back he was blocking things like, a package manager for emacs (that does exist now) and making GCC able to export an AST for external tools to manipulate (in particular for emacs to do semantic editing of code).
In both cases since it would make it easier for closed source software to make use of GPL software.
Adding Rust as a first class citizen to GCC.
He still might make decisions, but I doubt he has many technical contributions of his. And quite a few of his decisions can be discussed very controversial.