It’s absolutely amenable to practice, I agree. I don’t personally see it as an improvement to a cognitive ability like learning a concept/practice is, but rather as training yourself to notice. I’ve been known to infuriate many a (web-)philosopher of mind by insisting that aphantasia isn’t nearly as common as it seems to be based on self reports; instead, I think many people don’t have the ingrained tendency to notice the images present in the corners of their mind. The shakiness tells me it’s almost definitely an accidentally-evolved capacity, so they’re probably the more normal ones! Or natural, at least.

I do think there’s a better way to practice than this tho:

  the best way for me to improve a visualization is to research all the different tools and diagrams out there

Namely—and I say this with complete seriousness-psychedelic drugs, above all else LSD. I’m very dubious of the Steve Jobs of the world claiming it changed their intellectual outlook, but in terms of resolving “visual noise” based on intentional parameters, it can’t be beat. That’s what LSD visualizations mostly consist of in the first place, and a lesser form of the effect lasts for months after one dose, and indefinitely (forever?) after regularish usage. It’s non addictive and has a brutally steep tolerance curve that lasts for 2-4w, so “regular usage” means once every few months for a year or two, not every day.

Long story short: if you want to be a better programmer, contact your local felon today! Surely y’all are cooler than me and have cool felon friends…