Bitcoin simply isn't convenient enough for every day use. Some people (including myself) could say that Bitcoin wasn't designed for every day usage(despite what Satoshi was claiming in the whitepaper). The expectation of 1 billion daily Bitcoin users will never happen in reality and there's nothing wrong with that.
Nobody is saying that Bitcoin is supposed to be the number 1 global currency. I would be perfectly fine, even if Bitcoin never becomes truly mainstream.
I don't think that anyone could verify the accuracy of this statistical data, but 30 million people seems like a pretty good number for a 12 year old technology.
BTC reaching 1 billion active users seems more like a fantasy, rather than an achievable goal.
Lightning is perfect for every day usage of Bitcoin.
Sites like
https://stacker.news are using sats via lightning in a great way. Bitcoin is being transferred daily in sites like that. It's like magic!
Lightning really is changing how people use Bitcoin. It's almost instantaneous, and almost free of fees as well.