The bit about consent is nonsensical as no child is able to consent to the circumstances they find themselves in - adopted or not.
Its not nonsensical. Yes you're correct on the basis that children can't consent. Where you seem to go off in being not so right is by being blasé about bio children can't either. A biological child does not lose all of their bio family members legally for their natural life or start or restart their lives in a different family. The trauma attached to that loss is more than the vast majority of biological children will have to contend with.
The bio child grows up with family history/cultural stories and practices and genetic mirroring etc,. The adoptee does not get that connection. The adoptee has no recompose in adulthood to annul that adoption order.
Adult adoptees should have the right and freedom to choose to re-establish their original identity which was previously removed from them without consent.
They are forced to rely on the adults around them to keep them safe. If those adults are unable or unwilling to do that then that is what needs to be addressed.
Absolutely, don't think anybody disputes that.
A child can't make an informed, impartial decision on what is best for their physical and mental health.
No. However, that's maybe, probably an added argument for more supports and resources are made available for the adoptee we know that adoption can cause many adoptee's to have feelings of confusion, shame, anger etc,.
What would scrapping adoption mean? Children kept in unsafe environments or in permanent foster care ?
Nobody is advocating for a child to stay in an unsafe situation. Kinship care should be promoted more. For Example: baby Preston was only available to adopt because his grandmother, who has full custody of his older sibling, had breast cancer. It was her wish that once recovered she would take over custody. She wanted Preston to stay at his foster family till she was well again. If adoption has to stay then it needs radical reform and money pumped in. Radical reform has to be adoptee focused first.
How can that possibly be betterr
What about all the happy, successful adopted children? Are their experiences not valid?
All experiences from adoptee's are valid. Don't think anybody is saying differently. There is a growing understanding that adoption isn't just a one time 'act' it's a life long.
A person can be a 'successful' adopted person and still have an understanding that adoption is something that was done to them, for them and that's a paradox for many adoptees. Not one person should talk about what adoption means to the adoptee unless they are the adoptee. We/you/me shouldn't do that.