I'm glad that they didn't rob individual characters of their more emotional scenes. Their reality was that they were going on a one way mission, possibly one that would end in death, cut off from all that they previously knew. It makes perfect sense that they would make their last goodbyes to their loved ones and be briefly sentimental about it. Actually (as being discussed in the chat thread) I'm glad the writers have allowed for open emotional displays, in general.
Stoicism may have its place, but I think it's greatly over-rated and I think it shouldn't be commended as the best or only acceptable reaction to extreme circumstances or news. Just my personal opinion, but I think the world would be a far far better place if people didn't have to bottle up their emotions and expressed them more often (and were given emotional support) rather than leading to explosive behaviors.
It's understandable though, that some viewers might find it excessively maudlin or over-sentimental if its something they are not used to seeing. I've seen my dad cry over election results, or in response to a disaster or mass shooting on the news. He's a veteran of Vietnam. I don't view him as an overly sentimental person. I think it's a healthy human response, demonstrating empathy, compassion and connection to other human beings. In my opinion, it should be encouraged not ridiculed.