I'm pushing 30 and I would say no!
I have met some people over 40 happily riding an EUC so I don't see why not :)
The important thing IMO is that you ride according to your capability to handle sudden events.
Do you have experience longboarding? If yes, I would definitely recommend it.
When people ask me about difficulty, I always recommend them to do a little bit of longboarding beforehand.
Some skills I find useful:
- being able to shuffle around your feet on the board while riding (swiftness when taking off in traffic)
- confidently riding over bumps and holes (overall confidence, also means less muscle strain)
- being able to footbreak, if ever at some point electronics would break (peace of mind)
- knowing at what speeds you can jump off comfortably (safety)
These come to mind, there are probably more
For android users: Get osmand from f-droid instead of the google play store. When I installed from the google play store I ran into an map area download limit which does not seem to be there on the f-droid distribution.