When did it stop being the super smash bros subspace fanfiction?

Hasn't this been going on for many years? I'd be curious to know what the author actually feels about the work. Like do they go back and read their earlier chapters and cringe or are they merely impressed that they have gotten better. Have they gotten better? Or has the work degenerated as any long running fiction usually does after a time. Are there particular arcs to read that are excellent and others to skip.

Most importantly: is there fanfic of this work?

One of my favorite things about fanfiction is the wild crossovers. This particular fic doesn't sound like my thing, but just, people go so far off the rails in a way that is really enjoyable to me. Sometimes for "hilarious chaos" reasons, but other times people somehow manage to pull off a serious and moving story out of a blatantly ridiculous premise, which is just about my favorite thing ever.

Unrelated... Why does anyone choose fanfiction.net or wattpad over ao3 for hosting fic these days? There's definitely a cultural gap between the sites and the userbases, but even accounting for that, ao3's tag system is so much better and easier to search/better for discoverability, and there aren't ads. Are fanfiction.net and wattpad allowing authors to monetize fics or something? Or is there some other advantage I'm missing? Or is it just habit and sticking with the site they got used to when they got into fanfic?

I think fanfiction.net technically banned sexually explicit fics ages ago (idk about wattpad), so couldn't explicit fics get unexpectedly taken down there, too? Or did they walk that one back?

Edit: thinking about that number a bit more, although that may be the longest single fic, there are definitely a lot of authors who have written just as many words or more if you count all their stories within a single fandom. Some of them will write episode re-writes, similar to this, but post each re-write as a separate fic, too. And there are also a lot of long fics that are split up into series even though their plots form one continuous throughline, and I wonder of those may have been overlooked by whoever determined that this Loud House fic is longest. It absolutely might be longest, but I wonder.

I really thought that the Sexy Times with Wangxian fic was the longest fic, but upon double checking it was only the most tagged fic on AO3 at a measly 1+ million words.

Just trying to comprehend 16 million words is just.. mind-boggling.

This work of art sounds invaluable. I can’t wait for the Down The Rabbit Hole episode. From tvtropes:

Later-Installment Weirdness: Earlier chapters were only remakes of Loud House episodes with J.D. appearing to help out Lincoln and Clyde, while later chapters contain the following: entire wikia entries, transformation sequences that are pages long, Lincoln's harem growing bigger by each chapter, song lyrics copypasted, and gym sequences featuring 900,000,000,000,000 crunches.

This sounds like Mr. Boop but without the self awareness.

The Wandering Inn is an OC web-serial which is currently at 12,246,348 words and also still going. Not quite as large, but still very big.