Refractometers are one of the most misunderstood tools in home brewing. The two biggest mistakes are using the sg side of a dual brix/sg scale (the conversion is non-linear, and the scale will likely become increasingly off between the two the higher the gravity), and using one like a hydrometer, ie simply subtracting final from original gravity. Instead, only use the brix side of the scale, and use a calculator such as this one to determine the actual specific gravity/abv once fermentation begins: https://www.brewersfriend.com/refractometer-calculator/ (don’t worry too much about the Wort Correction Factor.) Do that, and your refractometer will be your best friend.
I actually switched to Ubuntu full-time way back in 2006 when I went back to school (anthro major), specifically to help me focus when using my computer and not get distracted by playing video games. Of course, nowadays with wine and proton on steam, that might not be as effective. But it worked well for me, never experienced any issues with word docs opening in libre office (or rather open office back then) or vice versa. There was once or twice where I had to use a computer in the lab in the library to run some niche program or another for an assignment, but not a big deal.