They're referring (I believe) to the screenshot right at the top of the article, which includes this absurd calculation:

border-radius: max (0px, min(8px, calc( (100vw - 4px - 100%) * 9999)) );

My guess (hope!) is that this is not 'serious' code, but padding for the sake of a screenshot to demonstrate that it's possible to use each of these different features (not that you should!).

Don't even need to remote in to anything, just store your working code on a network share

To say I'm annoyed would be very much overstating it, just a (very minor) eye-roll at one small line in a generally very good article. Just the bit quoted:

currency symbols other than the $ (kind of tells you who invented computers, doesn’t it?)

So they could also be attributing it to some other country that uses $ for their currency, which is a few, but it seems most likely to be suggesting USD.

Well, it's not really clear-cut, which is part of my point, but probably the 2 most significant people I could think of would be Babbage and Turing, both of whom were English. Definitely could make arguments about what is or isn't considered a 'computer', to the point where it's fuzzy, but regardless of how you look at it, 'computers were invented in America' is rather a stretch.

currency symbols other than the $ (kind of tells you who invented computers, doesn’t it?)

Who wants to tell the author that not everything was invented in the US? (And computers certainly weren't)

Onlyoffice does now have an ARM version, I run it on a raspberry pi 4 (integrated with seafile), and it works fairly well. Can't vouch for how much power it needs, to say if a pi 3b+ will be enough, though. Pretty sure it's lighter than collabora, since more is done on the client side.

I agree with the other commenter that suggested cryptpad, though. If all you're after is a Google docs like collaborative experience, cryptpad is brilliant, and much more resource friendly. (The office editor it uses is also a slightly modified Onlyoffice, so almost exactly the same feature set)

Most things, if not available as flatpak, can be installed inside another distro on distrobox. It runs in containers, so things can access a root filesystem (Just not the main SteamOS one), and is a pretty seamless experience, once installed. I have a bunch of non-flatpak software running that way, and it works great.

See https://www.gamingonlinux.com/2022/09/distrobox-can-open-up-the-steam-deck-to-a-whole-new-world/

"you’re not getting Mario, Zelda and Metroid on a Steam Deck"... Does someone want to tell them?

That shouldn't be happening. I use mine as a desktop all the time, Firefox is pretty snappy, with a whole bunch of tabs open and extensions. Sorry I can't give much more insight into what's happening, but it's definitely not right.