Well, google docs works not because they somehow figured out how to converge OT edits with as much precision as CRDTs do, but simply because they have a central server which orders edits anyway and don't need true leader-less convergence.
In fact, I agree not many things don't need a CRDT. CRDTs help with mathematical rigidity of convergence when you want true peer-2-peer collaboration which works without any central authority.
However, most apps anyway work on top of a central authority (example SaaS apps) so there is no real reason to accomodate all the compexity that comes with CRDT. They might get far with a simpler OT based model + central server based ordering.
For example even Figma doesn't call its model a 100% pure CRDT. It's a partial, simpler CRDT implemented with an assumption that there's going to be a server that understands ordering.
It's the same with Google Docs. They don't need a CRDT because it's a cloud app after all, which means OT is more convenient with major heavylifting (ordering and conflict handlings) outsourced to the server.