Legally true perhaps, not practically true. Some countries limit cartridges that can be used; a firearm that uses 5.56 x 45mm, 9 x 19mm, or 7.62 x 51mm would be off-limits entirely in some countries because those are "military" cartridges. Other countries limit firearm types (e.g., all assault-style weapons--box-magazine fed semi-automatic gas-recoil-operated rifles--and anything even remotely similar are banned for non-police/military use in many places). Many places place significant hurdles in front of people that want to get the appropriate licenses and permits such that it's nearly impossible.

It's kinda like how Hawai'i legally allows people to get carry permits, but practically speaking has only issued 7 in 21 years.

I've spoken to a few people in Finland, and they say that getting the training is hard because the classes (?) are limited, you have to attend a certain number within a specific time period, and they fill up really fast making it easy to miss your time window. But once you do meet that requirement, it's not too difficult to get permitted to own assault-style rifles, pistols, etc., and if you can get the rifle/handgun, you can get the suppressor (and they are so much cheaper there!).

Hadn't realized that Hungary and Slovakia were both going heavily authoritarian; that's a bummer.