Most 230W laptops were not meant to be run without power brick. They were more portable desktops than laptops. Even sold as such.

Oh no, portable workstations are a whole nother thing. This was 100% marketed and sold as a laptop. But gaming laptops have never been good with battery life.

They even tried to make it thin and light, which makes me cringe every time. Gamers don't need thin and light, wtf.

The laptop is designed to accept power over some terrible barrel jack that isn't actually made of metal. The conductive coating can scrape off after just a couple months of use and render it completely inert. That had happened again so I was stuck with USB-C charging, and that particular laptop only supported up to 65W via its single Thunderbolt port. I eventually fixed this for good by just stripping the barrel off and hard soldering the power cable directly to the motherboard.

Anyway, indeed, that laptop was not designed to run off 65W. Mainly because it had a dedicated Nvidia GPU, but also because it had a bunch of other stuff (couple 6W fans, bright 4K panel, etc.).

The battery basically didn't exist from the very day I got the laptop brand new from Best Buy. I'm not sure if it's possible to get good battery life out of a 99Wh battery while pulling 230W. Of course, you could simply increase the battery capacity, but a not-insignificant fraction of laptop buyers want to bring them on planes so that'd be a pretty dumb idea.