I complain because Apple decided to make the macbook pro 15 inch lighter and thinner resulting in 25% less battery (going from 99.5 watt-hour to 76.0-watt-hour), this means that they have to make more compromises to keep a good battery life and instead of having a decent graphic card like the nvidia gtx 1080 or 32GB ram, the new macbook pros are underpowered.
Since, apple is unlikely to decide to go back to the previous form factor, they are unlikely to ever sell a laptop with decent performances compared to their competitors.
And to add insult to the injury, switching to usb-c forces users (at least for a year or two) to carry a lot of extra adapters which makes the weight loss moot.