Long range weapons help with taking out command centers, or Sevastopol shipyard, etc.. They won't launch storm shadow, atacms, taurus, scalp or you name it at a trench, and that's what ultimately is what's holding counteroffensive back.
That's why these toblerone lines for russians have sort of been working, they slow down vehicles, to a point where they can be picked off by artillery or ATGM, then infantry needs to either retreat or carry on without armored support. And attritional infantry v infantry battle will work in russian favour.
If russia get let's say from november to june again to reinforce, there's going to be a lot more toblerones, a lot more trenches, a lot more minefields.