Calling it a lie might be a bit unfair.
The news article from June 29th it links to says that they'd be shutting down, and the tweet was less than two weeks on. I found another news story from July 10th [1] - two days before the tweet went out - repeating the intention to shut down permanently, and another from August [2] that affirms that a shutdown happened. So at the time the author of the thread was in good faith relaying the truth.
I can't find any news stories indicating that it reopened, so unless you expect the author to live in Denver or be following closely every single example he provides months after the fact, I don't think this is a reasonable criticism.
ETA: Actually, their social media appears dead since June; Yelp shows many locations closed, and the locations it doesn't show as closed have, uh, poems written in memory of them...so I'm wondering if it actually did shutdown and you're not just mistakenly thinking of/talking about a different yoga studio entirely.
[1] https://theknow.denverpost.com/2020/07/10/denver-yoga-studio...
[2] https://theknow.denverpost.com/2020/08/07/courageous-yoga-bi...