We can do nothing about people remembering things wrong. But we can do something about search engines creating false impressions.
This is not about that. This is about search engines creating accurate impressions. See, it was already illegal in many of these countries to say bad things about people, sometimes even when they were true. But now people in these countries have the right to ask people to forget about things about them which are true. In most cases they didn't need a new law in order to actually go after people spreading rumors about them on the internet, the original laws would suffice. What this does is actually protect them not from things they didn't do, but from things which they did.
The problem is, this information getting out is critical to society's advancement. Covering up people's actions makes them seem less commonplace without actually doing anything to curb the behavior. If the behavior is common and unacceptable for reasons of actual harm, then it must be uncovered so that something can be done about it. If the behavior is common and not harmful to others, then we benefit if it is uncovered and we learn more about it, so that we can learn (perhaps, someday) not to stigmatize it.
The right to be forgotten is not about making the world a better place. It is about permitting people to behave badly without consequences.