Wheel's spinning but the hamsters dead.

If it gets blocked, the reasoning will likely include that something of this magnitude will have to be approved by congress, which would prevent basically anything Biden/executive branch can do unilaterally. It's also going to turn this into an election issue for the next election and considering it massively affects around 40 million people from across the political spectrum, which doesn't bode well for republican party that is increasingly catering to their most extreme members and alienating the moderates and centrists they NEED to win even moderately contested races.

Ski helmets are also generally meant to take a lot of smaller hits, bike helmets take 1 big one and are meant to be replaced.

There's a mess of constitutional issues with the government stepping in like this and essentially compelling speach and unlimited public access to what's legally a private platform.

Your analogy only works if you have a moral framework that that can derive that killing you neighbor is bad. You haven't solved anything.

Yes and no. It's means our commonly held moral axioms are derived from biological drives, it doesn't mean those axioms are correct or incorrect in any meaningful way that isn't self referential.

Science science cannot bridge the is/ought gap. You can apply a moral framework and use science to gather information and guide decision making, but that moral framework is ultimately outside of the bounds of science.

Probably not.