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This doesn't seem like a fantastic strategy for Russia, seeing as Russia's GNSS system is also probably subject to jamming.
https://en.wikipedia.org/wiki/EKS_(satellite_system)
In a report published in June 2026, researchers identified three satellites from the EKS constellation as a source of space-based GNSS interference, such as GNSS jamming. Beginning in 2019, the researchers tracked powerful wide-area interference from the satellites over Europe, Greenland, and Canada. Significant interference was detected with the US American GPS, European Galileo, and Chinese BeiDou satellite networks, but interference was minimal on Russia's own GLONASS network[27][28][29].
Any one of those parties might decide to reciprocate.