'Smart' is only used ironically.
If your device describes itself as smart, that means it's stupid in ways you've never even thought of. Extra-stupid. Pan-stupid. Omni-stupid.
It's the same rule as used car dealers (or anyone, really) calling themselves Honest, like Honest Bob's Top Quality Used Autos and Payday Loans.
Or the name of almost any piece of legislature,which will usually do the opposite of what the title says. Like the UK 'Psychoactive Substances Act' which declares anything known to man to be psychoactive unless it's alcohol, tobacco, caffeine, or psychoactive prescription drugs. Or any us 'Data Privacy' act which usually takes away your privacy rights.