If they didn't want to offer hands free driving, that's their prerogative, but
1. they shouldn't have advertised that they would if they weren't going to.
And worse yet,
2. they have no right to remove a feature once it's implemented.
3. Your car would also be safer if they limited it's speed to the speed limit at all times, and disabled the centre screen while driving. Yet I bet you wouldn't be praising them if your next software update made those changes.
1. Even if they did advertise "hands-free" (and I don't recall that they did), it is their prerogative, and indeed their prudent business decision, to change the product that they sell to reduce excessive product liability risks. They would be foolish not to.
2. Similarly they have a "right" to change their product to remove features that they determine are not safe (i.e., they have no obligation or duty to keep unsafe features). Indeed product liability law would suggest that they could be negligent, and therefor liable, if they DID NOT remove potentially unsafe aspects of the car. In addition to legal liability risk they are also controlling bad PR Risk which is actually where more of the risk is.
For instance, they changed the low setting on the SAS and added battery shields to address the risk of battery punctures from road debris. You may think riding lower and without the weight of shield is a "feature" but it isn't one that Tesla determined was worth the risk of product liability and bad PR. That was a wise choice they made.
3. It is entirely unpersuasive to criticize an action that Tesla DIDN'T take, and that even other car companies do not take, and point out that that sort of excess concern safety applies to a very different action that they did take.
In fact the utter bankruptcy of that last point makes me realize that your arguments are not even operating in the same world of rationla and economic business decision making to assess risks of bad PR and legal liability with consumer features and cutting edge tech.
The only argument that would be worth the space it takes up on this screen is one that argues based on facts and reasons and evidence that the car is safe enough with that feature to keep the PR and legal risks manageable. But the party in the best position to assess that risk is the party with the most data, and that would be Tesla who likely already has loads of data on how the car behaves and how risky it is when following different UI patterns. I"m inclined to defer to their superior data and decision making on that -- and be grateful that they have the wisdom to be far more advanced than any other car company.