We're using CL in prod for an embedded system (https://evacsound.com/) for some years now, fairly smooth sailing. It started out as an MVP/prototype so implementation was of no concern, then gained enough velocity and market interest that a rewrite was infeasible. We re-train talent on the job instead.

Incidentally I also did an algo trading system in CL at some point (who didn't?). The sibling comment is spot on that outside of deep backend it's a self-reinforcing ecosystem with too much focus on auxiliary stuff if you have to re-implement it.