What an interesting question! I believe that we have started using it more with the lockdown, at least here in my country. Nobody knew it and those who knew about it, didn't pay attention as everything was done at school.
These days, we do everything inside Classroom as it is compulsory in my school. We can use other platforms but we... create classes and assigments, upload material, videochat, record sessions... whatever Google allows us to do, we do it!
Smiles from Argentina, Maria :)