There was a question in one of the Facebook GoPro forums today. Someone asked which gimbal they should / could get that would suit a GoPro 10.
Various options were mentioned (my recommendation having tried it is the Zhiyun Crane M2S), but a couple of members scoffed at the thought.
Their reasoning was that the in-camera electronic stabilisation of the current GoPro is more than enough, and a gimbal would offer no advantages.
This is plainly not true if you think further than simple stabilisation.
A gimbal is also incredibly useful to get into tight places and still retain that stability. Think low down or high above your head shots, especially in a fast-moving environment. You get a much firmer “hold” of the camera than handheld will offer.
Another example is the “around the corner” type of shot where the camera is poked around a corner to reveal something. This is very hard to do handheld or even with a selfie stick and retain stability.
(I am guessing this is why Zhiyun use the “crane” moniker by the way as the gimbal is acting as a pseudo crane in many cases).
In low light, you retain stability even if the shutter speed has been slowed and the aperture opened, again giving better stability than in-camera will usually give.
Depending on the model, you can easily add other devices such as mics or lights, thus giving more flexibility (the M2S has a built-in video light complete with magnetic add on colour filters and other Zhiyun models even have a decent built-in mic).
So as you see, a gimbal can be a bit more than a glorified Selfie stick!