I have no hard data to back this up, just my own observations, but, no, I don't think there is a second poker boom.
In the 2000s, I could host a tournament in my home, send out invitations to 250 people and have 60 of them show up for a $100 buy in tourney. Those days are gone. Most of those rec players lost their poker roll and quit.
Same time period, when I would go out to Vegas, almost every casino had a busy poker room. I loved going to the convention oriented hotels because lots and lots of those conventioneers would take breaks from showing or selling their wares and run into the poker rooms. At a 1/2 table at Mandalay Bay, I could make an easy $1K a day with very little risk. Even if I suffered a serious bad beat, because the conventioneer never had a big stack, it didn't hurt much. .
Now, most poker rooms are rarely full. Lots of the players are old men who buy in for $60 to $100 at a 1/2 table and are looking for a pleasant morning of coffee with their friends. Those guys are dying. When I was in my home poker room last Friday, I told the story of one of the oldsters not seeing his Royal Flush during a $2000 high hand period. He called it a straight and I corrected him. The dealer told me that man had died a couple of weeks ago.
I had not been to Vegas since about 2010 because east coast poker had become so easily available. I went out last year and was amazed to see how few
casinos still had meaningful poker rooms. Preying on conventioneers wasn't an option. The players in the few remaining poker rooms were significantly better than the casual players I had lived off preciously.
After 10 days, I had paid all my flight, hotel, and food expenses and made a measly $1000 profit after 9 days. I don't see a boom.