What do you wear to work?
Serious question. For some its suit and tie. Manual workers, perhaps a one-piece overall or maybe cargo-pants and a hi-viz. Maybe the job needs ear/eye protection and a hard-hat. If the environment and protocol permit, shorts and a tee is comfy. We dress for the occcasion.
Until now, whatever the space-job, the choice was largely a one-design-fits-all with the same protection, dexterity, mobility, bulk and cost. I'm pretty sure that the current Spacex IVA and EVA suits are not yet a finished product. I'm also pretty sure that product may not be suitable for every environment and task, but why would you want to have the same level of protection, security and dexterity on every job? It is also demonstrating innovation, and trialling new technologies, materials and fabrics and it was, above all, a test flight.
The suits are perhaps indicating what Spacex demonstrates every day; the normalisation of space, and it being just another workplace.
(They also look pretty cool don't they?).