If the parent comment is correct and this form is necessary for personal financial protection, I wouldn’t consider that “all out”.

That’s the bare minimum consideration for a viable company structure.

OP wanted to set up a nested copmany structure. Instead of Person -> LLC it goes Person -> Limited Partnership --> LLC. The in between company is only for tax-efficiency and has nothing to do with limited liability.

Even then you'd usually go with a Person -> Holding UG -> Startup UG structure. That's a few hours and less than a thousand Euros.

It’s not necessary. They did something completely overkill

It's not.