You're mixing together different drone types (payload, range, operational role, etc.).

>luckily for Ukrainians these gliding bombs lack precision.

Not really. They don't have 3m CEP, that is true. Yet, a 2000lb bomb doesn't need it. They do hit the targeted buildings, which is enough. The main limitation here is that those bombs require military jet planes to launch. Russia is severely limited here.

The lack of precision does matter when we are talking about trenches/bunkers and bombs often missing by many dozens and even hundreds of meters.