Theres a benefit gained from ditching the front derailer. One-by systems use a narrow wide chainring on the crank to better hold the chain. Paired up with a clutch in the derailer, you’ll never have the chain come off in rough riding.
I’m a large (6’4" and 280lbs) and pretty powerful rider and my 12 speed Sram/Shimano systems hold up very well.
The 12 speed was mostly an example to say it’s a durable system. I also have a Resto-Modded Schwinn road bike from the 80’s with a modern 11 speed Shimano set up.