I mean I'll give you an example. I just installed GWR's springs, which are a bit stiffer and lower the car 1/2-3/4 an inch on Bilsteins.To Better answer the question, your stock shocks typically won't blow out, but they will wear out noticeably faster than on stock springs. For many people this effect is gradual enough that they won't notice, or they sell their cars before it becomes really bad. However, if you are running 30K miles + on Eibach springs, the handling and ride quality definitely won't be as good as when your car was relatively new.
But, since most people don't really track their cars or drive aggressively, it's not that big of a deal. Springs are great for looks and cost savings.
If you really want to make your car handle and look good, get a set of good coilovers. Do it once and do it right. If you can't afford to do it right, save more money.
If I weighed 50 pounds more and always had a passenger with me and some luggage in the trunk, I might end up with a comparable drop in ride height, or at least I'd come close. When discussing theoretical effects, I like to ask, "just how much of a difference will it actually make?"
Bilstein B6s are some pretty well built shocks. I don't know what their "effective range" is supposed to be or how they'll handle stiffer springs in the long term.