1. This shouldn't be an issue. Nintendo has allowed for carts containing multiple titles for years now. Inserting the cartridge causes all the games on it to appear on the home screen.

2. The Switch is massively popular. Assuming the cartridge works and sells even somewhat well, we will 100% see games being shared in whatever format it uses. It might take awhile for the Switch's full back-catalog to be dumped and uploaded in the new format, but popular / recent titles will be circulated within a matter of days. If there's a way to convert existing XCI / NSP rips to the new format, there are plenty of individuals / groups who will race to get everything converted as quickly as possible.

3. Assuming the cart is completely transparent to the Switch, which is likely to be the case, then I see no reason why updates wouldn't download as normal. If Nintendo is able to detect the carts and ban Switches that use them, it may still be possible to access updates by rolling them into the same file as the base game and loading them from the cartridge. Personally, I think the second option is fairly likely, as it's already possible to do this with NSP rips, and it's the method that offers the most resistance to whatever countermeasures Nintendo may deploy.

Same.
I literally said "what" out loud three times while reading this.

This post makes me want grilled cheese, but I don't have any bread right now and all the stores are closed because Thanksgiving.

CDs have been making a slow comeback for the past year or two, and global CD sales actually went up last year for the first time in over a decade. If it's anything like the vinyl or cassette resurgence, I imagine it won't be too difficult to find places that sell CDs in a few years.

My partner has DID, and I've done a ton of research into it as a result. This story sounds extremely plausible to me.

I've read multiple case studies where people with multiple personalities will get out of whatever situation was causing the disassociation, and over time some of the personalities will vanish / die off. There was also a very extreme case I read about where the fractured personalities managed to coalesce into a new whole, but it was a different personality than the original. Basically a fully formed identity that was suddenly living the life of someone they didn't identify as, and whose memories they couldn't really recall.

Even in my partner's much less severe case of DID, the less prominent personalities will sometimes go dormant for months at a time. Haven't had any of them disappear fully yet, but it's at least theoretically possible from what I understand.

Not just technically. The killer combo of FOSS operating systems is GNU/Linux on desktop and Android OSP on mobile.
I'm curious what the person you replied to is running on their phone if it isn't Android based.

I've found that Reddit's search generally works when searching within a specific subreddit, but otherwise it's mostly useless.

I've only ever heard about it from things posed here

Not to mention that useful information was harder to find and more difficult to verify, especially for niche technical topics like the inner workings of specific games.

No, that's not it. It was a video livestream that had the stereotypical hippie looking host sitting on the floor behind a table taking calls. I don't know if anyone recorded it at the time, but I'd recognize it instantly if I saw it.

I missed that, but I remember around 2011 there was some new-age cult leader guy doing a call-in live stream that got trolled until he rage quit.

The water jets they use to cut metal only work because the stream is so narrow. Hydro pump is more like getting hit with multiple full-blast fire hoses at once