Coming back "early" would also occur at a cost of either tens of millions of dollars for an extra launch, or at a cost of valuable experiments not getting run because the space station was empty of personnel. NASA policy would prohibit the remaining astronauts from... well, remaining, because they have to have a lifeboat, which the two "rescuees" would have just used to go home. Thus, all of them would have to go home.
IOW, painting this as "normal operations" in any sense is disingenuous. The danger levels may not be overly exacerbated, but it was a very costly failure, and it may well be a drastic inconvenience to the astronauts. We likely won't know the truth of the latter until they write their memoirs.
It's easy to manage spin when the opinions being spun are in orbit on a restricted communication system.
The astronauts were/are comfortable on the ISS. There are plenty of supplies, and more have gone up as part of regular resupplies. IIRC the only discomfort for them was having to use makeshift sleeping places until the previous crew departed. As astronauts, they pretty much live to go into space, so they were happy, of course with the minor caveat of the disappointment regarding their primary mission not panning out and of having to be away from family for a few months. Especially considering that they are unlikely to get to be in space again as the ISS is due for retirement by the end of the decade and NASA wants to give space travel experience to the astronauts intended for the Moon.
Putting it differently, the biggest issue/inconvenience with this situation was that Starliner was taking up a docking port and causing things to have to be rescheduled. Prior to launch, crew are trained to operate certain experiments, or to do servicing space walks. Since the crew being launched had to be reordered, these plans had to be reworked.
There are a lot of people focusing in on the fact that they will be returning in February, but they're completely ignoring the fact that they're perfectly capable of coming back early, that option is actively not being chosen as having them stay till then would be more optimal for station operational planning.