It's completely fine to accept your situation without giving up on improving it.
The problem is when people refuse to acknowledge reality because they really hate certain labels and are too invested in not having that label apply to them.
I have met many, many brilliant engineers. They fly real fast and really far. The funny thing about it is that they tend to crash and burn sometimes too. Sometimes they even break orbit, but even then, someone has to stabilize that orbit from time to time.
Life takes all kinds of people. Folks who are willing to simplify things while ignoring fads are just as useful as those who jump into the unknown of new technologies.
What you think of as a weakness you need to compensate for so you can get work done is what other employers will consider an asset because you refuse to add complexity where it is unwarranted. What you call "slow" others might call wisdom.
I'm really not trying to cheer you up. I'm sharing facts from over a decade writing software being the "slow one".
It's completely fine to accept your situation without giving up on improving it.
The problem is when people refuse to acknowledge reality because they really hate certain labels and are too invested in not having that label apply to them.
I'm slow and it's ok.
I'd like to become faster in the future.
But for now, I'm slow, and that's ok.