P'much what Osaka35 said; everything was hectic around the time Atmosphere was just a set of kernel patches rather than a stand-in replacement of its own. The common homebrew APIs constantly switching, people getting experimental and testing the boundaries of what they can do with the hardware... it's led us to things like the plugins with Tesla, the extensive support RetroArch's gotten on Switch, and things like the classic Sonic trilogy being cleaned up for Switch from mobile ports to A.I.R.
We've already had the basic Quake ports for years. Doom 64 was a homebrew thing early on until it got an official port on the eShop, and the same with Serious Sam (HD). Some of the bases are already covered.
No real need to get into the piracy stuff, but I feel like that's fleshed out enough as-is for something the homebrew community tends to want to distance themselves from as much as possible.
Atmosphere literally just got its first big release in the last three days that's changed a lot, and I'm sure we'll see some more things coming revolving around it. But the point is, we have a lot, and developers know
what it is they want to work on.
Keep in mind too, 2020 as a whole was a ball of stress for everyone involved, especially homebrewers. Sure you have the months where it's just everyone idling around their computers for most of their days, but eventually you have to keep your families in check as well. We're still not out of the pandemic (it's still pretty bad over here on the East Coast) so I'm sure a lot of people will focus on their familial priorities than some redditors and forum posters who want hax.
And for some people whose names may or may not be Agraber, they have... other priorities.
Which, depending on how that goes, may directly impact some Switch 'brew projects.
It's not all good, but you can't say there isn't activity of a sort.