Earlier quoted context omitted.
I tried LeechBlock for a while and had that 64-char random string passphrase thing on. Turns out I became really quick at typing those 64 characters to get my dopamine fix.
You can make it up to 128 characters. That's impressive that you are able to type a random string of nonsense so fast. My hack was to take a picture on my phone, have Apple's image recognition copy the string to my iCloud clipboard, and I'd paste it on my mac. It's too easy to defeat the purpose of these things if you're even slightly driven.
Maybe the goal was to motivate you to find a hack anyway :)