Not worth it.
You can - EASILY! - find a cheap 2-in-1 convertible for that price with much better specs and a lot more feature support in terms of connectivity, if you're willing to possibly go without wired ethernet. And chances are you already have a controller you can sync with it wirelessly for gaming, or can get one for pretty cheap.
Lenovo Chromebook i3
Comes with Intel i3 10th-gen, 4 GB DDR4, 64 GB storage, FHD display, touchscreen, 2x USB Type-C ports, 1x USB Type-A port, Intel UHD graphics, $334 USD
HP Chromebook
Comes with Intel Celeron N4020, 4 GB DDR4, 64 GB storage, HD display, touchscreen, Wifi 6, 2x USB Type-C ports, SD card reader, $257 - $320 USD
Dell Inspirion 11 3195
Comes with AMD A9-9420e dual-core, Radeon R5, 4 GB DDR4, 128 GB storage, HD display, Windows 10 Home, touchscreen, Wifi, bluetooth, HDMI, $322 USD
Any of those, particularly the Dell, are much better in terms of specs outside of not having support for wired ethernet. While they don't have OLED displays, they render at a higher native resolution than the new Switch, and in the case of the Dell one you could probably try running the Switch emulator.
In any case, you get better performance specs and better native display output to the screen, and access to a lot more games (including Steam games if you get a Windows-based one; oddly there aren't too many of these with Linux installed :S). Besides, it's not like you can't buy ethernet dongles for these anyway if you really want wired ethernet support, and most of those come in around $10 - $20 USD.
This isn't like with the PS5 or Xbox Series systems, this isn't a device that simply can't be replicated with existing PC tech at a price comparable to those consoles. I get that Nintendo's not in the market for power anymore but that doesn't mean they have to under-deliver even compared to OEM 2-in-1s that aren't necessarily pushing the tech envelope in their own market segments! Especially considering this thing is $349; honestly unless you're knee-deep into Nintendo's 1P what worth is this compared to a $299 Series S or $399 PS5 Digital,
and you already have a normal Switch or Switch Lite?
The new Switch is the bare minimal from Nintendo here; even if they're doing well sales-wise that's not an excuse to be some complacent with the hardware innovations or improvements. Fans should demand better.