"Inflation can’t be transitory.

Businesses aren’t going to lower their prices later."

So, we are taking random tweets and treating them as economic gospel?

While it is true that businesses are unlikely to lower prices in the future, that is not what inflation measures. Inflation measures the change in prices right now; if the cost of, say, butter goes up 10% this year, that would represent 10% inflation in its cost in 2021. But in 2022, when things have presumably stabilized, the cost of butter probably won't go up much, maybe the usual 2%. Then you're back to 2% inflation.