Yeah it's a bit silly to compare a number of permanent residents to a yearly supply of tourists. To get some fair comparison you should get the average stay duration (which I'm guessing would be <2 days on average and <1 day for many) and then divide that by 365.
Not to say that any number that comes out of that (even if it's not as drastic) is something that residents should be forced to be ok with. (Local) Governments (municipalities?) exist for a reason and it's their responsibility to ensure their localities are not taken advantage of. I appreciate this is a bit of a "rose tinted glasses" point of view, but it's worth keeping in mind that it's somewhat of a new problem and these outdated structures that have been in place for a long time may not be prepared to deal with it yet.
P.s. fuck Airbnb and all the rest of them taking advantage of "governmental inefficiencies"
Yeah that's the point at the price point they have in mind it's definitely not viable