Pre-sale just started on the 20th February. You cannot buy yet, only make an offer (how much you'd like to buy during the ICO, at a discounted price). The technology is still under development, so things can still change. We'll know more towards the end of March or early April. So stay tuned.
Most negative things you hear mirror US and EU media negative propaganda: hostility against Venezuela is very strong because their government is not enslaved and they have a lot of oil. Be careful, only rely on official information from Venezuelan government sources if you decide to buy (there are many fakes already).