4) The system is built in a way that it exploits people when they are cheap but qualified labor and then throws them away. When this happen, there are almost no options for further employment.
5) This approach can very really destroy life & it's worth to warn those who think about career in science

2) The undertanding of precarity comes later when one will need social security and/or medical care
3) The main group of scholarship holders are compratively young, healthy & mobile, so precarity is often masked

One of the resons - there is no detailed explanation of the system to international students/researchers, so one needs time to get in. Also there is a general expectation that people will not stay fter their studies but go back home, or at least move somwhere else.

As someone who get the scholarship to come to Germany, I can tell from my personal experience that understanding of precarity comes with delay for several reasons.

However, I do not expect that "people will not be willing to work under these bad conditions". The reason is simple - German academia relies very much on international researchers, and a significant number of them comes from places where the conditions for scientists are [often significantly] worse.

Besides, short [& chain] contracts in academia have severe negative impact on scientists:
- no mid/long-term planning possible
- frequent unemployment periods
- frequent relocations (and usually you don't really choose where to relocate)
- having own family / children / etc. is hard to impossible

Significant part of my work is on Ukrainian birch taxa, and when we're talking about genomic studies of Ukrainian flora, there is an additional relevance because these data could provide additional evidence for russian warcrimes (and ecocide in particular).