Don't learn first aid so that disasters won't happen?

This was a question raised in the same Otzar Hachochma forums. Sounds very strange but this is a point of view expressed by many Charedi leaders.

They claim the following. If someone learns first aid then Hashem is free to punish someone because the person who learned first aid is there to mitigate the damage.

R' Shteinman made a similar point regarding life insurance. He is reported to have said, life insurance is not worth it, as the merit of giving tzedaka to the widows and orphans is what is saving this generation from destruction. Others have claimed the following. What happens if a husband does not have the personal merit to guarantee longevity, while his wife and children do have the merit or the mazel (fortune) to live financially secure lives? In a case like this, the husband would live a long productive life as their provider. By purchasing life insurance, which guarantees their sustenance even without his presence, he jeopardizes his life, since his dependents are now provided for should something bad happen to him.

R' Dessler made a similar claim about medical research. Man cannot do anything in this world, what looks like cause and effect is actually a test for man. Man is supposed to see through cause and effect and recognise that Hashem is actually the only cause and effect. Hishtadlus/man's effort, is only a tax. It has no effect, it is simply there so that the charade is kept up. According to R' Dessler, a person should do the minimum hishtadlus that is required because it doesn't help anyway. Anything more then the minimum is simply a waste of time and effort and if the person thinks that it helps is actually kefira. Therefore, medical research not only doesn't help, no one is cured by medicine, they are cured by Hashem, but it makes things worse. Medicine is just another test from Hashem and since medicine makes it look like there is cause and effect, it takes away from peoples emuna and causes more kefira in the world. Additionally, now that medicine has become common and accepted, everyone must do it to fulfill their minimum hishtadlus. In other words, nowadays, we have to waste time and money on medicine that doesn't work anyway because it has become accepted and therefore falls under hishtadlus. In other words, every time we come up with a new medical procedure, we are in essence increasing our hishtadlus tax.

If we think hard about the above opinions it is clear that they are simply taking the Charedi hashkafa to it's logical conclusion. It is also clear that these opinions are ridiculous and make life into a joke. All you have to do is look at life expectency to see how ridiculous this idea is. Life expectancy until about 1850 was between 35-40 in Europe. Since 1850, life expectancy has gone up to about 80 (see https://ourworldindata.org/life-expectancy/). The explanation would seem to be quite simple. Modernization and industrialisation (especially the advances in medicine) improved the health of the population dramatically and caused the dramatic rise in life expectancy.

However, according to R' Dessler how can we explain this dramatic increase in life expectancy? If modern medicine has no effect and it's just a charade/tax and everything is only from Hashem why the change? When you couple this with the idea of yeridos hadoros, that every generation declines spiritually and is on a lower level then the previous generation, the question gets even stronger. Why should our generation which is on a lower spiritual level then the generations a few hundred years ago, live so much longer?