You did not read the GDPR with understanding (or at all).
You have the right to be forgotten by various institutions when they have a legal obligation to comply with local retention policies, but under no circumstances must not provide any data to a third party except by court order (but in that case, the GDPR is not something you worry about). Consider factoring agencies or real-life situations where someone was unemployed for a year or two. Should their past influence their current credit score?
For example, if I find you have two tickets for driving under the influence ten years ago and you want to drive a 20-ton truck, should I consider you a risky person, albeit it was 25 years ago?