This is sign of holding which is good for the bitcoin price I think. The more 1 bitcoin holder increase, it will create scare and the price will be higher because we have limited bitcoin all time.
Agreed, I've always said that the market will determine bitcoin's real utility - as a currency or as an investment. It feels like bitcoin's best use is still as an investment. And this is fine, especially since there are so many other cryptocurrencies that could serve as a currency, best use for transaction due to its stable and modest value.
To the OP, statistics that you've cited are challenging to infer specific influences or conclusions from, particularly because it's so easy to create a bitcoin wallet, by anyone! So the increase in BTC wallets with at least 1 BTC could simply be an indication that "whales" are spreading their wealth around among multiple wallets so if any one wallet gets compromised they won't lose as much coin.
This could also mean that in the last 5 years it's been possible for people to acquire more Bitcoin...a good, but not alarming statistic at only 11% annually (or in the last year).
Listen, they're all positive signs...just tough to declare a single conclusion.