LibertyX has not listed their ATMs on CoinATMRadar. So both figures can be true and nobody has to be lying.

I have used bitcoin ATMs in Europe. Once, the communications went down while I was still inserting the bills. I contacted support and they already knew the correct amount I had inserted. In a few hours they sent the bitcoin, no problem. They can be a bit pricey, but they are a good way to convert bitcoin to/from fiat in countries where they don't require identification.

Regarding scams, it's not really the ATM operator's fault, but usually they have prominent warnings displayed.