Yes, lots and lots of options have been added to the game since the Type S and its Seeker variant were designed.
The ship exists to fulfill that trope of the solitary space miner. Yes, successful mining operations are corporations with fleets of specialized vessels. That's not a player character concept.
Likewise, the Type S you get from mustering out of the scout service is specifically a detached duty vessel, not the personal possession of the now detached duty Scout. So that's why the scout service provides all those facilities for it, there's no mortgage, and you can't sell it. There are lots of scout/couriers that are not part of detached duty program, whether purpose built or sold off by the service.
If the players want a scout/courier that belongs to them and can be sold, they get a mortgage and don't get the free servicing at the scout bases, because the ship is no longer part of the Scout service.
Like the seeker and it's indie prospector trope, the Type S is designed to provide a "we have a space ship to get from place to place that doesn't require us to worry about space ship level expenses" option. It's big enough for your typical 4 PC group, it's J2 so you have some travel options, and it's streamlined and comes with an air/raft. Everything a small group of vagabonds need.