If Tesla's motivation in removing the Mobile Connector was just to save money then Tesla could also delete the floor mats and the Gemini wheel covers that currently come with the 19" wheels. The wheel cap kit would cost Tesla less that supplying (4) Gemini wheel covers.
I don't recall reading when Tesla apparently removed the auto dimming side mirrors from the Model Y. The early 2020 Model Y vehicles did not come with the auto dimming side mirrors, then the auto dimming side mirrors were again supplied with the Model 3 and also with the Model Y. Now the web site only states that the Model Y comes with "Power folding, heated side mirrors".
I don't recall reading when Tesla apparently removed the auto dimming side mirrors from the Model Y. The early 2020 Model Y vehicles did not come with the auto dimming side mirrors, then the auto dimming side mirrors were again supplied with the Model 3 and also with the Model Y. Now the web site only states that the Model Y comes with "Power folding, heated side mirrors".