Oh that's simple. Both Tesla and John Deere are bad guys.

And yes. I am happy to expand that list to literally every other manufacturer you have in mind. They are all bad guys too. If manufacturers were altruistic good guys, they would need no regulation.

When I bought my current car, it came with an owners manual--for free!!

I can grab any data I want from the OBD port. The hardware was cheap, the software to use it is, again, free.

I'm not excited about this brave new world where you have to pay a subscription fee to plug a cable into a device you own and interact with it, and even less excited there are people here defending the idea.

This is actually pretty widespread on newer models. There are cars for which you need a subscription costing thousands of dollars every year to put your parking brake into "maintenance mode", without which you can't fix your own brakes.

Like others have said: Tesla is the bath guy here. I'm pretty sure most people are focused on the other ways Tesla has been fing around that they just haven't gotten this far down the list.

Also, there's something special about tractors. Their owners (farmers) are both willing and capable of repairing tractors, in general, so John Deere is demonized for taking that ability away. Where as Tesla's owners are comfortable not changing their own oil, so "less" was taken away. (Yes, I know Tesla doesn't have engine oil, don't get hung up on that)

Because in agriculture you are absolutely expecting to be able to repair stuff yourself.

I work on a project related to it and was absolutely surprised at how the company gave instructions to the clients to help them fix their machines (stuff I wouldn't be able to do myself).

Having a non-working machine can mean big $$ lost everyday.

Real life isn't as simple as the one in fairy tales, there's usually more than one villain.

Tesla is the bad guy too.

Whataboutism. Two evils are still evil.