No doubt on the 8th Gen. GPU'S Apple's pretty much out the game for those with higher needs. Many do appreciate the "balance" of portability & performance, equally for many the new MBP is overly compromised. Personally I would far prefer a more usable, capable notebook as being needlessly thinner has only resulted in ceasing to use the Mac professionally not needing or wanting the compromises the new design brings.
Q-6
Well they usually optimized their software (like Final Cut) to fit on MacBook Pro's graphic processors, ever since 2006. The solution turns out works fine. Although GPUs back then were not really generates much of the heat.
good things are the CPU, Storage and RAM were always arguably one of the best you can get from a laptop. Speakers are great too.