Is a dedicated car GPS still worth buying when phones have Google Maps and Waze?

Across specialist Garmin community threads on Reddit, the recurring argument for a dedicated unit is that it doesn't depend on a cell signal, doesn't tie up your phone, and keeps working in rural dead zones. Phone apps still win for live traffic and POIs in dense cities, so most reviewers we read recommend a standalone GPS specifically for road trips, rural driving, commercial use, and older drivers who want a simple dedicated screen.