Certain weapons have stopped being produced. As you can see from the missile types that are fired by Russia now compared to early in the invasion, the varieties have gone down to only a few types.

This is because stored supplies are being depleted, components are hard to come by, and Russia is focusing on only producing missile types with the greatest success rate of reaching their targets.

[–] [email protected] 2 points 11 months ago

You may be right that they don't make the most sophisticated equipment, but maybe that equipment was meant more for show of their capability, which is why they now go for what has better results for the cost.
I just saw the latest with Jake Broe on YouTube, where he states that Russia is capable of making way more missiles than previously thought, and they now allegedly have 800 placed at Crimea, which are speculated to be used against Ukrainian infrastructure during the winter.