By presenting an arbitrary other motivation, which implies that there is no obvious motivation.
Yet why does my reasoning not make sense? We fought in Libya. Everybody hates Russia and would be eager to fight if Russia didn't have nuclear bombs. Remove the critical voices and we are ready to go.
Why else would it be introduced? If they don't plan to lock down the entire internet, the age verification is useless. It could be security theater but it receives full media attention. So it is important. What else but war could be so important that it demands so much power over civil liberty?
Like the other comment says, it must be the New START treaty, but I am no expert. It seems like it's a Russian excuse for their carelessness however some parts of the treaty were respected so I think Putin and Trump had some topics to clarify.
On 21 February 2023, Russia suspended its participation in New START.[8] However, it did not withdraw from the treaty, and clarified that it would continue to abide by the numerical limits in the treaty.
On 2 June 2024, the United States revoked visas of Russian nuclear inspectors, describing this step as a "lawful countermeasure" to Russia's "ongoing violations" of the treaty.
So some parts of the treaty must have been considered active.
On 1 June 2025, Ukraine claimed to have destroyed more than a dozen nuclear strategic bombers, including two Tu-160, at airfields deep inside Russia with swarms of small drones. The bombers were still parked not in nuclear strike protective bunkers, but in open-air, according to obligations under the New START Treaty with the US.
The issue is that because of nuclear treaties between USA and Russia, Russia is required to park their nuclear bombers out in the open. If USA wants Russia to keep them out in the open, they had to make a good argument.
So the laws won't protect the children. Then why do those laws exist?