People have in fact done prison time for "uncapping" DOCSIS CPE (although I believe only in situations where they were making a commercial operation out of it). I love seeing sites like this, but if I were involved, I'd tread lightly around commercialization, advertising, taking donations, etc.
https://www.justice.gov/opa/pr/oregon-man-sentenced-boston-3...
https://arstechnica.com/tech-policy/2010/01/hacking-cable-mo...