Spoke to a couple of Venetian bar tenders (both of whom spoke in Veneto with their clients). I said I was surprised to find Cynar offered as a Spritz variant on so many bar and restaurant menus lately* didn’t recall seeing it a decade ago and asked when Cynar became an alternative, They agreed that Select is the representative Spritz for Venice, but both made a point of saying that people within Venice itself have been drinking Cynar in the Spritz style “since forever” in the meaning of as long as can be remembered.
If you have a taste for Chinotto soda, you’re half way to appreciating Cynar as a Spritz.
*particularly around Via Garibaldi/Castello area, didn’t notice it much, if at all, along any of the main tourist routes.