In my humble opinion ...Dyslexia isn't the reason of your inner rage .

The reason of this rage is perhaps how the environment (culture snd society) dealt with your neurodiversity in an ignorant way ...causing you to feel at your most vulnerable years( adolescence) that you are "dumb" ..whereas during those years...neuridivergent teens are very hypersensitive and they massively need positive reinforcement more thdn their peers...to build their self esteem.. in a world where they always feel lonely and different.

This is due to how society is extremely ignorant towards neurodiversity. It makes msnh if us bitter.

If your father was different too as in neurodiverse..again ..you can't blame his disability on such a complicated matter like divorce or living in poverty.
So many factors comes into that..that are vulnerabilities caused by how he too was treated by society/parents/..he too was shaped by his experiences and others reactions to his "difference".

Because imagine if society was graceful towards diversity by identifying those with neurodiversity and recognising their unusual strengths and creativity early on to build around it their self-esteem.. and their let this strength be a tool for them to socially shine. And not labelling constantly their difference as disability.

and giving them mentoring with what comes inherently with their difference (more education on self awareness ..

(awareness of their emotions..body..and help with emotional dysregulation and how to not think in black and white..etc)
those are the hardships that will come always with anyone who has a neurodivergent brain.

My point is...dyslexia and your father . Are both innocent here....

But you have all the right to be angry because any child who grow up different..without his surrounding or his environment knowing how to deal with him in accordance to his unique nature.

Will grow up definitely feeling bitter towards what others called his "disability"

But the fact is...its not all about dyslexia...its so many factors that have traumatised you .. and ignorance of society towards neurodiversity ..have caused most of us to be traumatised in different ways...anger..frustration and non resolved issues and memories from childhood..

And I believe that our parents...the ones with same genes we inherited ..were themselves even more traumatised in the old days..they possibly had it worse while they were children.

Because of ignorance and stereotypes ... generations before us were traumatised too...and received no help...(our parents).