There is a logical difference between making a decision that some time is a right time to make a decision and making a decision that you don't have enough confidence in either decision.

Holding is not lack of confidence in a decision. Holding is exactly the same confidence as a buy. It’s always interest to see analysts recommendations go between sell, hold, and buy to me because like the one who initially posted, I believe a hold is the same as a buy. The effect on your return between a hold and a buy is the exact same for those dollars. It would be illogical to say you would hold a stock at a price but would not buy a stock at the same price. Every time you are not selling it should be based on the same factors as if you were buying. Indecision just results in an uninformed decision, it doesn’t make your past decision right.

Technically two other commenters here have a point, I think. It depends on your bankroll and investment strategies. But it's so personal that no one (especially random analysts who don't even know you exist) could really advise to HODL and make sense. That's a nitpick, though insightful one, to be fair. But in in-vacuum analysis it's either BUY or SELL. No one knows your portfolio to tell more, so everyone assumes that your money from a corresponding risk category just sits idle.

Incorrect. You should not put all of your money into a single investment, according to Kelly. BUY means "the amount of this you should have according to Kelly's criterion has increased", HODL means it is unchanged.