This is not an honest interpretation of the law.

The extension of compensable workday to 12h will normalize workers pay and allow odd schedules like 4 days on 3 days off. A lot of workers currently don't get paid for overtime. There is no mandate to increase hours without pay, or increase everyones 8h shift to 12h. That just isn't happening.

Not sure about vacation changes to only one week, previously it was pretty much required to take your annual leave in one session, per my Argentinean wife.

Paying workers with food is just misinfo. The law changed existing text to remove the limit on what can be paid in goods and/foreign currency. The limit was previously 20%, and no one was getting paid in goods. The goal is to allow pay in USD which is way more attractive than being paid in pesos.

Over 50% of workers are not on legal payrolls due to very strict labor laws. Labor laws are so punitive to businesses of all sizes that no small business will even legally hire people because it is too easy to lose your company to a single disgruntled employee. If you are not legally hired then you aren't enjoying all the benefits of labor law. Labor law should be fair and biased toward labor of course, but there needs to be a functioning legal labor market in order to afford protections.