In Italy the cutoff is 65.
50 or so years ago when I spoke to many high school and college classes, I began by writing on the board
abortion
infanticide
euthanasia
I am sad to be proven right.
i

Maybe put them on oxygen masks. 

Let's say you have one respirator left and two people who need it.  One is 35, but the other 70.

How do you decide who gets it?  Do you flip a coin?  Or can you say, "well, the 35 year old has a 3x better chance of survival if he gets a respirator than the 70-year-old, who has a 75% chance of dying even if he gets one?"

To go with the 35-year-old in this case is not really direct euthanasia ... it's more like a form of triage.  Now, to say that IN PRINCIPLE no one over 60 should get a respirator, that's certainly wrong.

Let's say you're a medic on a battlefield, and there are two wounded soldiers.  You can only get to one of them at a time.  Who do you get to first?  Could you decide based on the consideration, "this guy over here has a 90% chance of dying even if I help, but this other guy would likely survive if I help him."  Is that an immoral decision?  I don't think so.  That is not euthanasia at all.

You still take every measure you possibly can to save that aforementioned hypothetical 70-year-old, but the decision of who gets the respirator can be made on chances of survival.  If I gave the respirator to the 70-year-old and withhold it from the 35-year-old, there's a high probability that BOTH would die, the 35-year-old because he didn't get it and the 70-year-old despite of having it.

That's socialized medicine. [The Israelis] do not have enough money for the machines.

By contrast, the State of New York arguably did have enough money to bring its installed base of ventilators up to the number it had been forecast (in 2015) to need for a future pandemic, but Gov. Cuomo refused to spend it.  Instead, he ordered rules devised for triage by providing or denying patient access to ventilators.  Then the State spent even more money by building a green power "boondoggle ‘Buffalo Billion’ solar panel factory" [*]:

New York's Ventilator Rationing Plan
March 18, 2020

I was disappointed that she didn't actually describe that plan.  But I now have yet another reason to thank God that I don't live in New York.

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Note *: <https://www.creators.com/read/betsy-mccaughey/03/20/new-yorks-ventilator-rationing-plan>.

That's about as far as I read in that article.....

THIS ^

That's socialized medicine. They do not have enough money for the machines.

Never fear, the U.S. will come to the rescue and send them many ventilators ... even while our economy goes broke and our citizens are dying for lack of ventilators.