Amsterdam has been bitching about visitors for decades but unfortunately for them they are the national capital so they cannot stop Dutch citizens from vomitting on their precious canals.
Yes Venice is dying anyway, but the biggest issue is that Venice is an impractical city to live in, without any of the infrastructure of modern cities, without any industry or services to work for (except of course the University and the various cultural institutions). I really wonder who are all these people who have a job in Venice but can't find a home because all the apartments are rented out to tourists.