So what percentage of software projects just get rewritten to make sure people have jobs these days ?

Sooner or later, all of it

The question is.. do you want to have a job?

@petergriffin oh I don’t mean like rewrite as in redo an old project Nono we need more of that
No i
Mean cases where people code and recode literally the same project because they don’t get utilized otherwise because there is no demand for new projects to justify them

Most software development at the corporate level tends to be profit driven hence why Linux isn’t better organized and old tool chains not updated and still often in
Messy c.

About zero.

Companies aren't interested in randomly giving people jobs for the sake of it. If they've no work for you to do, they're not just going to let you do random pointless crap - they'd just make you redundant.