I have similar feelings about sugar-daddy clubs, not anywhere near to the same degree though. I don't personally like or support the concept (I'm old school and for me, football's too commercialised as it is already), but I don't really care either because those are not German clubs, and most importantly, because all other clubs in their league have equal playing ground - as in any club can sell themselves if they want to and manage to find someone willing to take over. Which is not the case in Germany due to the 50+1 rule as you probably know, so basically some clubs are just using loopholes and the fact that ultimately, DFL doesn't give a fuck, and thus they (i.e Hoffenheim, Leipzig) are gaining an unfair advantage over the rest who are at least trying to play according to the rules.
As for the way RB Leipzig are run, they might not rely on big name transfers, but their transfer balance in the last 5 years is -110 million €, that's more than any other club including Bayern, and they were playing as low as the 4th tier during that time, always spending more (without selling!) than all other clubs added together (in their respective league at the time).