I'd like to defend the T430 from a T430. Yes, it was a bad purchase when I made it (and when the author made it), but you can buy them for $100 a piece now on Ebay. Keyboards you can probably buy 20 for $50. Since they are from the dawn of Thinkpad's bullshit, they hardcoded the hardware choices you could make for upgrades
into the firmware. Awful. But 1vyrain (
https://1vyra.in/) came along and fixed all that.
A T430 doesn't even feel underpowered these days, and has a (horrible) webcam (that can be improved a bit by judicious software postprocessing.) With a dining room table, a router running OpenWRT, 4 T430s, and a 5-10 year-old gaming PC as a server to compile things on/serve things from/etc., you could start a little software company and your biggest expense would be the table.