I agree that it made more sense to normalize relations about 5-8 years ago (too bad we were locked in a 2 wars and had a financial crisis to deal with) but better late then never.
While he was not a mass murder (or attempted mass murder) according to our governent (whom you don't believe) he was directly responsible for foiling some plots and fingered our own people who were committing treason. That is a pretty fucking important.
As to the last part about 25% of their population already has internet. So expanding it would help. Is it the perfect solution, no, but lets be honest people will always find a way around the blockades in front of them as long as they have the internet access (China, Egypt, Iran, etc prove that).
Ultimately I think we are better off for having started the process to normalize our relations with Cuba. Is it the dream scenario, nope, but that will likely never happen. Lets start importing our shit (tv shows, movies, food, coffee, etc) over there and lets Americanize them.