No one should be shamed for having dyslexia or any other neurodiversity. However, having dyslexia is also not an excuse for being slapdash; because if that were the case people without dyslexia would never (or rarely) make mistakes... when in fact we make shitloads.
My husband and brother both have dyspraxia/dyslexia and both take tremendous care over written work - using strategies such as asking others to check, reading work aloud, using software - to try to avoid errors. They are both highly intelligent, incredibly articulate, smart, creative, successful people. My husband wasn't even diagnosed until he left school (the wonders of a private education...) and still found coping mechanisms whereas my brother was diagnosed at about 7 and had a statement of special educational needs throughout school so tends to cope pretty well. I know every person is different, but I've said it before and said it again: blaming errors that occur from being slapdash (and I make plenty of those errors myself!) on dyslexia give everyone with dyslexia a bad name and it's a pet peeve of mine. If someone who doesn't know much about dyslexia sees the instahuns going on about "oh this error and that error are because I'm dyslexic" then they're going to think all people with dyslexia make a ton of mistakes in even the simplest piece of writing when it's just not the case.