There were not ~1 billion views. Musk was combining views with mentions and people discussing it, however the XTwitter algo computes. Much of that could have been detractors / folks talking down on it as well. It may have been a speculative figure. Musk is known to pull numbers out of a hat. 20 hours ago he said there were probably 200M views. Elsewhere I saw < 100M views. Sure there are more since then, but it isn't going to come close to 1B. 1 out of every 9 people on the PLANET cared enough to listen?
Just saying, facts matter, numbers matter.