Another +1 for NetNewsWire. Its simple, ad-free, syncs over iCloud, can set an entire feed to reader mode (so convenient for certain feeds that only broadcast the headline), and its FOSS.
The creators encourage supporting other FOSS devs and accept no donations to themselves or NNW.
I've gotten chinese clone keycaps from Amazon, they're fine as long as you get like doubleshot and read reviews.
If you've got the money to spare or find a deal (like myself and a friend split a buy 1 get 1 free deal) check out Drop.com. A decent selection of high quality keycaps and imo are such a comfortable profile (MT3) but if you prefer a more conventional cherry profile, they carry those as well.
My daily driver at home has Drop X Noctua MT3 keycaps from drop and my work keyboard currently has some XDA Botanical clones from Amazon. Both are good, the Drop keys are better though.