It’s an addon. Search for REALTURB CAT AREAS GLOBAL V2 MSFS. It identifies where there are clouds and generates turbulence when crossing them, something that should be native to the simulator. The problem is that we don’t have anything yet that simulates icing and this addon seems to add the same amount of turbulence regardless of whether you are crossing a CB or a normal cumulus. But it’s something.
X-Plane really is much better in this regard. It’s a simulator where you really need to plan your flight according to the weather en route and need to avoid dangerous formations just like it’s done in real life. In MSFS 2020/2024, you can leave your plane in cruise, cross the biggest hurricane or the biggest CB in the world with anti-ice turned off and your flight will continue in the same way, flying level and straight without even shaking.
For me, this is one of the biggest priorities and what I most want to see in this simulator.