I'm guessing you feel something similar?
As a dedicated Linux user for well over 10 years, you are correct. That, plus the fact that, I have a free up to 32gb mp3 player built in is a big bonus.
The fact that iriver use an open source base means that if they ever decide to discontinue support then I will be able to change the system on it fairly easily. This is also a bonus.
Closed systems tend to work and have good support, but if they decide to give up they leave their users in the lurch and you have no recourse.
Anyway, I always have a big supply of spare parts, and that may come in handy.