I've been to Crimea a few years back, and IMO 97% can be true in this case. A few reasons:
Crimea was russian territory until Chrushev gave it to Ukraine about 50 years ago. Everybody speaks russian there, most of crimeans think of themselves as russians.
In Crimean cities people get water from the tap couple of times a day, electricity is also unstable.
Pensions, salaries to public servants about twice higher in Russia.
Ukraine did not invest much, if at all, to local public services - public transport was still from USSR times, etc.