He actually went on this toaster tirade for 3 entire episodes, starting from when Dan got the guide from a fan in Part 53(?). He bitched about Dan getting advice for something
he specifically asked for in an AMA, then Arin discussed for the
entire rest of that episode about how
he was receiving e-mails (because he has his personal e-mail,
waffledino@gmail.com I think it was, and his business e-mail both out for the public to use whenever they can) telling him how to play games and how much
he was suffering for it, and how badly harassed he was getting, with such hurtful phrases clogging his inbox such as "Take off your hover boots please" and "Yo use a shield" (his examples, not mine), culminating him with basically calling the dude who helped him, u/going_greener, a dick.
In the second episode, Arin continues carrying on until Dan finally asks why Arin is like this, and why he cares so much about a problem HE had already solved to progress the episodes, to which he goes on the unique experience rant. His analogy was that, if you cooked toast regularly, that's all fine and dandy. But that if you were to cook toast wrong (a.k.a.
burn it) and eat it for 30 years without anyone telling you how badly you were fucking it up, it wouldn't matter in the end because it still made for a
unique experience. To which everybody got on his case for saying, going: "no Arin, if you ate burnt toast all your life, you're still a tard for eating burnt toast and never checking to see if you were doing it right, especially after
30 years of fucking it up".
The third episode he continued to bitch, bringing that bread analogy home and pretty much revealed that that was how he treated playing Zelda for 20-30 years
completely ignoring the fact that he uses walkthroughs like it's nobody's business INCLUDING later on in TTYD after this rant, which pissed A LOT of people off even further. Bear in mind, this was right before Majora's Mask and Skyward Sword happened, and people had just had to deal with Arin's ineptitude in Ocarina a playthrough before this one.
By the beginning of the fourth episode though, Dan had finally had enough and pretty much told Arin to shut the hell up. Hence why that point in the playthrough is colloquially referred to as "Badgegate" within the fandom.