Earlier quoted context omitted.
I feel for ya. People often rail against reinventing the wheel, but 36 times out of 37, I'd rather have an in-house created wheel that rolls how we know it should with code we understand than some 3rd party bag of voodoo that supposedly roles in the desired ways, maybe.
I would far rather have something put together with well known, documented, tested third party libraries than some undocumented in house crap that one "superstar" developer knows how to work and no one else.
Instead of just looking at fifty lines of code to see what the "undocumented in house crap" is doing, you'll be spending all your time on stackoverflow trying to figure out why these third party libraries don't play well together. "Has anyone had this problem with version 3.3.2 of JLSHE and version 8.7 of Loopdidoodle?" Oh, I think I need 3.3.4. But the developer of my GUI framework says only 3.3.2 is tested and I'm on my own if there are problems. Somebody has a workaround but it only runs on RedHat when I'm running Debian. Should work okay if I recompile it, though... except the kernel version I'm running is too far behind.
And your assumption third party libraries are any better quality than a focused in-house solution is a bit naive.
Finally, a few years down the road the mind share for half your third party libraries and frameworks will have dwindled as the people you were counting on to maintain them found something shinier.