This is how flying through a thunderstorm looks like in the X-plane:
It is impossible to control altitude, very hard to control attitude and your aircraft is thrown violently up and down (updrafts, downdrafts exceeding 5000ft/min). Even xplane is missing hail, possible flameout occurence, g overstress to the airframe etc…
Here is the article from the former military and airline pilot with 28 years of experience:
Over the course of 28 years as a military and airline pilot I have had numerous emergencies. An engine fire in flight, landing gear malfunctions, numerous engines that wouldn’t restart in flight (post maintenance check flights), student pilots that tried to kill me, and flown all over Iraq and other garden spots.
I’ve been the most scared in thunderstorms. By far.
High performance, all weather aircraft can indeed withstand the most severe weather conditions … when they’re in the hangar.