I looked into the stats before I started flying and iirc this is not the case for private aircraft on a per-hour basis. In fact, private aircraft may have been riskier than motorcycle.
Last time I checked overall private flying was about 8 times more dangerous than a car, and right on par with a motorcycle.
~~However, something like 35% of the accidents are running out of fuel, and of the remaining accidents, 35% of those were in poor weather.~~
So if it is a clear day and you remember to put fuel in the airplane it gets you ahead of a motorcycle and not as safe as a car.
It really depends on if you look at just fatal accidents or all accidents.
Edit:
Looking at 2019 it appears 38 of 109 fatal accidents were weather and fuel related.
So if you fill up with gas and fly on a nice day you are definitely still worse than a car and maybe twice as safe as a motorcycle? (statistically speaking of course)
If choosing a powered outdoor hobby, maybe ride motorcycles offroad then. Trail riding is totally a thing. With electric motorbikes it could be a peaceful day out!
I looked into the stats before I started flying and iirc this is not the case for private aircraft on a per-hour basis. In fact, private aircraft may have been riskier than motorcycle.