Whilst SpaceX have done a good job on the suits I think it’s important to be aware that a short stand up EVA is a relatively benign test so what we saw today was a first step but an important one.
History shows that once astronauts start try to do meaningful tasks when geared up in zero-g air cooled suits struggle at best to handle the heat loads..
It will be interesting to see how the SpaceX suits evolve over the next few years.