This is not true. I have been using swisscubancigars.com for many years without problem. There are many websites that discretely sell cuban cigars but I have found this one to consistently have the best prices. Prices since Covid however have rendered smoking cubans a special-occasion luxury only. If you want to check the authenticity of a box of Cuban cigars, you can do so at this website:
www.habanos.com
I prefer medium to full bodied cigars and I have found several Honduran and Nicaraguan cigars that are much more reasonably priced yet with a similar smoking experience as Cubans. Perdomo, Rocky Patel, Cuba Aliados (formerly Puros Indios) and Tatuaje are just a few examples.