The ticker-tape parade is a specific type of municipal parade dating to the late-1800s following a fixed route on Broadway. The first one celebrated the Statue of Liberty in 1886. The Mayor understands precedent and very clearly wanted to ground this in that municipal tradition.
important to note that one of the reasons New York fucking rocks is that when something good happens here it’s not like, oh let’s sing the song about it, it’s like wait which of the multiple iconic songs should we sing about how fucking awesome it is