I doubt this particular move will complicate Russia's war efforts in any appreciable way. There is no non-fanciful way in which the named, well-established and closely watched kernel maintainers could have leveraged their status for it, and the tech scene has been one of the remaining bastions of pro-Western sentiment in Russian society. How many young programmers will be disenchanted with the West after hearing of this, and finally relent and answer their government's call to go write software for military drones or whatever?