I was an early adopter of a Chumby (damn I loved that thing). The risk I took was that they would go out of business and no longer support the eco system - that risk proved real.
I can accept taking a risk and it not working out, this is taking one risk and having the company try and pin other risks on you.
Blaming the customer for your weak ass product is not the early-adopter risk, its the caveat emptor / screw you risk. I reject the idea that early adopter means accepting bad quality.
I recently had an issue with my car (A volvo for what it matters) with some painted plastic pealing. It was the first model year, I wasn't surprised, things need to get worked out...the early adopter risk is from them working things out. I took it in and they initially rejected the warranty claim and blamed me. I offered to have a paint chemist friend look at it and do an analysis - that changed their tune quickly. The early adopter risk I took was to my time that there might be some manufacturing quirks...not to them being sleazy about standing by their products.