In my opinion: Yes. Long answer follows.
I take the liberty to interpret the question a bit wider and consider any motorised transportation, as Greg.Ley mentioned.
For inspiration, I had a look at the list of categories on the great wikiloc trail website. This is a website about GPS trails. Most of those would classify as outdoor. I have pasted the list below. I have marked all motorised methods in italics, and all methods I consider off-topic between parenthesis. I also added some comments here and there.
I don't know their exact definitions (what's the difference between ATV and offroading, or between their three motorcycle categories?), but I propose to include off-road motorised transport except for trains (which I think doesn't belong on wikiloc either). Even if it's not my hobby to go by snowmobile or ATV and prefer not to see any form of motorised transportation in nature, the reality is that those exist, people use them, and when they do, they also camp, cook, have emergency kits, etc.
- Accessible — outdoor in a wheelchair?
- Alpine skiing
- ATV
- Back country skiing
- Ballooning
- Barefoot
- Bicycle touring
- Canicross
- Canyoneering
- car — can be almost off-road, e.g. what about someone venturing to the forestry roads of the Kola peninsula?
- Caving
- Cross country skiing
- Cycling
- Diving
- Dog sledging
- enduro
- Flying
- for blind — experience smells and sounds?
- (Golf — why is this even on wikiloc?)
- Hang gliding
- Hiking
- Horseback riding
- Ice climbing
- inline skating
- Kayaking - Canoeing
- kickbike
- kiteboarding
- kite skiing
- Longboarding
- motorcycle trials — not sure about this one
- Motorcycling
- Mountain biking
- Mountaineering
- Mountain unicycling
- multisport — Don't know what this is
- nordic walking
- Offroading
- orienteering
- Paragliding
- Rock climbing
- Roller skiing
- rowing
- Running
- Sailing
- Skating
- sledge
- Snowboarding
- Snowmobiling
- Snowshoeing
- Stand up paddle (SUP)
- swimming
- Trail bike
- Trail running
- (Train — why is this even on wikiloc?)
- via ferrata
- Walking