Meh, math and statistics are (ab)used pretty much anywhere in science. Carpenters and blacksmiths both use hammers, but so do roofers and geologists.

I can see how that might be a deal breaker for some applications. Good to know that there are alternatives around!

…

Illustrator → Inkscape

Lightroom → Darktable/CaptureOne/Rawtherapee

They may need some getting used to if you come from adobe, but they are all very capable.