If you find popular spots I️n your town you can still experience some of it. I️ stopped at a park on my way home from work and there were like 8 people playing and said hi to each other and what not.Just started playing this week ago, I feel kinda bad I missed the whole boom but I guess that's on me.
Hell there's hotspots in my city that you can still see dozens playing it. It's not the same as when it first came out and you'd see hundreds but it's still a nice experience. IN some ways it's improved. Like... I️ can put something in a gym and it doesn't get knocked out in 5 mins