Not sure why you're getting downvoted, this is clearly correct. I still have many friends that I formed from working in the same office. For most American adults, the group you spend most of your time with is your coworkers. If you don't have a group hobby or activity outside of work, you have no mechanism to cycle new people in to your life in a setting which easily allows relationship building. There's a reason people who are a part of a church consistently say they're less lonely than people who aren't, and it's not a sense of faith.

I picked up Jiu Jitsu a few years ago and found that to be extremely effective when it comes to meeting people wherever I go. It's usually a stead group of people with other people rotating in, and doing collaborative activities together makes for quick friends.

I love remote work, and I take full advantage of it as a digital nomad, but we should have good faith discussions about the tradeoffs and how to mitigate it.