As someone who has helped to secure critical national infrastructure several years ago, I can say that it was a mess to disclose the vulnerabilities I identified, and in some cases it took years to patch them. Some of these vulnerabilities were RCEs and mass PII leaks. It's simply not worth the risk for most people - who aren't in the USA - to bother doing this sort of security research. However, if you are in the USA, there are provisions in the CFAA that enable good-faith security research to take place (https://www.justice.gov/archives/opa/pr/department-justice-a...), so to the best of my understanding, you're able to do good-faith research without being charged or prosecuted, and you should take advantage of this if you have the skills or models to do so. I am not based in the USA, and there are no laws in my country that guarantee me zero jail time for simply trying to do the right thing, so I am not incentivized to continue finding vulnerabilities in my country's infrastructure.

Edit: If other countries don't catch up and include similar provisions in their laws, they'll simply fall behind and put their citizens at risk. I'm sure every country has individuals willing to help that currently feel unsafe - look at the large amount of bug bounty hunters worldwide who, I'm sure, wouldn't mind practicing their skills by securing their country's infrastructure.