Meat packing plants are essential businesses. They should be operating. State and local lockdown ordnances are not preventing them from doing so.
The issue about meat packing plants being closed is not that they are being forced to shut by overzealous Democratic governors. They are being shut by their owners, insurers, and occasionally government actors, when - while trying to operate as an essential business - an outbreak of Covid starts to affect their workforce and makes continuing to operate too much of a public health and private liability risk.
Everybody wants meatpacking plants to be open if it's possible to do so. The workers, the owners, the government, and people who like eating meat. But if it can't be done without exposing large numbers of meatpacking and meat supply chain workers to the risk of Sars-Cov-2 infection, then in spite of how essential they are particular plants are going to have to close.
Now it is possible that Tesla will be able to open up and operate and not become a Covid hotspot. But there's definitely a risk that they will, just like the meatpacking plants did. And is that risk worth taking for luxury cars, rather than food?