Tesla's manufacturing has come a long way in the past few years. In 2018, Sandy Munro famously tore down the new Model 3 with a lot of criticism for things like their excess of parts, fasteners, and welds. They made a lot of changes, including some he suggested, and now Munro tends to rave about how well they're engineered for ease of manufacture. This is a guy who gets paid by Big 3 auto companies to help improve their manufacturing.

A great visual is this video of someone snapping together much of a Model Y like legos, in ten minutes by himself: https://www.youtube.com/watch?v=lawGMl8sHzc

Another fun one is Munro's comparison of the thermal management systems for a Model Y and Ford Mach-E: https://www.youtube.com/watch?v=m1kHsd3Ocxc