Curl|bash isn't any less safe than installing from random a ppa, or a random npm or pip package. Or a random browser extension or anything. The problem is the random, not the shell script. If you don't trust it, don't install it. Also thinking that sudo is the big danger nowadays is also a red herring. Your personal files getting stolen or encrypted by ransomware is often worse than having to reinstall the OS.

sudo run "some link to a shell script"

Never understood why that became so common place ...

Modern?

It's been over a decade since this became a norm...

And 10 years since https://news.ycombinator.com/item?id=17636032

The link sadly seems to be dead though

Shots fired !

I wish you were wrong.