I agree. For me it's not required to know someone personally to be professional, establish trust, and have a great working relationship. If a friendship arises naturally, then great, but I also dislike the forced team building events (or after hour hangouts) companies think are essential for a team to work well together.
And yet I've learned that not everyone is like this, especially nowadays with remote work growing in popularity. Some people do feel that a personal connection helps in a professional setting. So I tend to begrudgingly accept this and make an effort to do this for the team.