Also, to avoid "dangerous" not yet professional amateurs having a chance against big editors.
Lots of big players are already providing shit software to millions of customers especially through government contracts because they've hired armies of legal and sales teams, squashing the little guy in the process.
If just providing some small web service built on top of open source now requires hiring a huge legal team, well goodbye to any entrepreneurship.
I know this because i've seen big players win contracts over actually talented people 9 of 10 times because they can play this regulation game, and i've seen small companies burn 100s of thousands in consultancy fees over GDPR that made zero difference for their Wordpress setup that a talented coder could have used 10 hours to fix.
That said the intentions are good, but for some reason EU thinks small players should have the same extreme measures as Facebook, Google, ie the actual reasons this regulation was made in the first place. Bizarre.