I think the number of cryptocurrency ATMs installed doesn't really reflect cryptocurrency's performance or adoption rate. Rather, it shows how many don't have other options to access cryptocurrency or trade it for cash. Besides, I doubt big crypto investors use those machines. What would indicate a boost in crypto adoption is when more businesses accept crypto as payment.
During the start of cash ATM in my country although I am not correct about when it started, but when it became popular to be, it gradually reduce banking problem, and increased quick and fast cash usage, now many of us like myself can't remember when we went into the banking hall, even the very rich uses the cash ATM, so I think Bitcoin ATM is for the culture of adopting quick and fast usage of Bitcoin, and even whales would appreciate using Bitcoin ATM's.