I think the point that lots of disgruntled people are trying to make is they wouldn't have cared if the new MBP was heavier or had less good battery life. They'd rather have had the performance, than had thin and light. If they wanted thin and light, they'd have gone for the MacBook.
Then they are buying from the wrong company this has been apples direction for at last 15 years and they pretty much told us exactly what they would do with the update. If you are surprised or disgruntled you haven't been paying attention,not apples problem or anyone's else's Apple aren't doing what you want, that's life get over it.
I realise many people got into Apple laptops in the 2009 to 2011 era purely because everyone else was making very bad laptops, but the competition is now good and if you have specific needs rather than a slim light excellent balanced all round portable then other makes are more what you are looking for. That's fine just go with another make of laptop then swapping over is not the problem it was, but don't blame Apple with following through on a vision for portable devices that they have been aiming for for more than a decade because it's not what YOU want....