It is, there’s just a limit set by the kernel for the number of pages the command line as a whole can occupy or something like that.

No, it's still an artificial limit, even if you can change it (usually after your command has failed).

The xargs command was designed to address this. From this perspective, it is a kludge.

Yes, and xargs isn't the same thing. It splits a single command into multiple commands, which can lead to surprises.

The issue also breaks scripts left and right. It really needs to be solved.