My team does exactly this too, especially during the pandemic when we couldn't socialise outside of work. We spend 10-15 minutes before standup bantering and ou

My team does exactly this too, especially during the pandemic when we couldn't socialise outside of work. We spend 10-15 minutes before standup bantering and our team has come out stronger for it. Even though we'd lose that 15 minutes of productivity every day, our team is actually coherent while other teams are a mess. We get stuff done, we work together effectively, and we actually enjoy working together. It makes all the difference.