Amsterdam has recently banned cruise ships from docking at the city's main terminal.
www.smithsonianmag.com/smart-news/amsterdam-bans-cruise-ships-180982606/#:~:text=Amsterdam%27s%20city%20council%20voted%20last,New%20York%20Times%27%20Isabella%20Kwai.
Other European countries are imposing fines and restrictions amid tourist overcrowding.
The issue is overtourism impacts the residents not only in quality of life but in cost to provide the additional services required. I don't think it is the selfie that is at issue but the impact of the throngs of tourist ganging up to take the selfie.
This summer multiple national parks in the US and recreational areas managed by the National Forest service have implemented a timed entry reservation system to get into the facilities to mitigate crowds larger than the capability of the area to support. Two examples is the Mt. Evans Scenic Byway and Rocky Mountain National Park.
www.nps.gov/romo/planyourvisit/timed-entry-permit-reservations-park-access.htm
It is gotten to the point that the crowds are just too large to not control the flow.