Don't you have that the wrong way round? In this tweet, Russinovich is arguing for the newer thing, not the older thing. The comparison would be the commander saying use a machine gun and consider bayonets obsolete, and the commenters who haven't used a machine gun are saying "he hasn't enough experience with modern bayonetting to say that, modern bayonettes wielded by sufficiently competent bayonetters are as good as any machine gun".

And then other critics saying "Russinovich hasn't demonstrated skill with a machine gun so how can he say bayonettes are obsolete?"