Ask HN: Is Pen Drive a reliable/safe option for Boot?

I have couple of Laptops which came with Windows 10 pre-installed. I want to run Linux(Centos before, now Rocky Linux) in those Laptops. I don't want to install them directly in the Hard Drive with Dual Boot. So I installed the Rocky Linux onto a Pen Drive and whenever I want to boot RockyLinux, I simply plug in my Pen Drive and hit the boot options and choose.

This is working Great so far, despite little sluggishness due to the Pen Drive Speed(I'm looking for a faster one).

Is anyone using the same option and is Pen Drive a Safe boot option, will it get corrupt ?