Their accuracy is as good as any other projectile with onboard thrust vectoring, a global satellite network to help it make targeting course corrections from hundreds/thousands of miles away, and a team of engineers with hundreds of combined years of experience in the field of balistics behind each shot. I do think that hypersonics fall into the “paper tiger media darling” category of weapon, but not because of their accuracy. Hypersonics don’t change MAD math at all; nukes with MIRV are already effectively uncounterable (and amusingly enough this class of weapon also reaches hypersonic speeds during re-entry). The only situation in which a hypersonic would really be desirable over a cheaper conventional weapon is a moving, well defended high value target like an AWACS platform or a plane full of politicians. It is a more capable weapon in that situation, but in any other situation shooting a hypersonic is a case of firing a missile that cost 8 figures at a problem that likely could have been solved with a much cheaper munition. Imo the primary value of hypersonic weapons is writing stories about them in the media and making filth like putin worry that the US might really be able to guide a missile past his air defenses and directly up his puckered fascist asshole.

There are plenty of videos from Ukraine and Israel that you can watch online. These missiles can hit specific buildings.