It seems like people in the comments forgot that the MC wanted to boost healer reputation cause from floor 70 they are REQUIRED as main party members as well as tanks! So far essentially the clans have been brute forcing progress with DPS classes. However just like many Asian RPGs, they punish you if on the early levels you didn't balance out your party.
In regards to the party, the MC thought that since the contract is up and they are guild staff they wouldn't just quit their job to join his party. In the novel his thinking is that HE won't be around forever. His plan is to return to Earth but he forgot that his party members think he is a resident of the world.
Also it seems like either the translation suffered somewhat in this chapter. It's OK to take more time to release chapters if we get a more accuret translation.