Will unsubscribed publishers be notified if tipped?

my question is very simple.
I like this YT channel from this guy: I visit it with my Brave browser and I understand that the channel is not subscribed yet to the Brave Reward System.

Now, I might want to send him some BAT as a tip anyway in appreciation for his work and in the hope that this myght be an opportunity for him to discover BAT and brave…

what is going to happen? Is he going to get a message on his channel from bat system saying: “knock knock this is bat, hey someone wants to pay you for your content: why don’t you give a look at our product??”

or, more likely may be, will that tip sit there until the publisher, may be in one or two years, will decide to open a bat and brave rewards account?

and if so, is this any smart?