An analogue would be advertising a new car that gets 150mpg, but not mentioning the fuel it uses is a special exotic fuel not made in many existing refineries that requires 6x as much oil and you need 9 gallons of non-fuel to run through the engine for every gallon rather than 0.2.
Every single statistic nuclear proponents cite that can be easily checked in a few minutes is either technically true but designed to mislead like this one, or an outright lie. It makes it very hard to believe the things that cannot be easily checked.
In all likelihood one or more of the SMR concepts around is safe and economically viable enough to fill an important niche, but when all information they mention turns out to be lies it's kinda hard to trust.
Plus noone really know how you might make TRISO pellets not cost $40-600/MWh (or rather it costs well over $600/MWh and they think it might come down maybe) or cost $20/MWh to handle and store at the back end of the cycle (although this one might be solvable by burying the whole reactor I guess?), so it doesn't really matter how cheap the reactor is if it uses that fuel.