Definitely not a rushed decision by politicians that barely even understand the scope and consequences of what they just decided for more than 500 million people despite the biggest uproar across all of the EU that has ever taken place. Article 13 takes the platform owners into responsibility to prevent copyrighted content from being uploaded. We already have the rulings of platforms being accountable if they don't remove copyrighted material in hindsight, so that's clearly not what has been decided.
How do you programatically determine if something someone uploads is copyright-protected? You can't even always tell as a human, so how would an algorithm be capable to? To determine it with the best possible accuracy, you'd need something that is able to actually know, not to mathematically guess. Now even ignoring obscuring through all kinds of edits, you'd need a database of at least everything that is allowed on your site. And that still would block everything that is not explicitly in the database, including for example private photos - the algorithm has never seen that picture before, so who knows? Maybe it's copyrighted? Better block it, we don't want/can't afford that fine.
So ignoring that this is obviously far from ideal, this is yet one of the "best" ways we have. So where do we get such a database from? Google and other big companies, that already have them today. The very companies that the EU is so keen on to keep under their foot just gained a massive new market. And I'm pretty sure that they already have a bunch of experts exploring ways how these services could me marketed and sold to smaller companies and other platforms.
Once the decision passed the council, which it most likely will, it'll be up to the individual nations to decide on how this law is actually applicable. If they don't realize, that it's literally impossible to turn this into an applicable ruling given the current state of technology, they'll sentence user content generation in the EU to death. Only big companies and everyone buying their services will be able to have something better than the current status.