Data is already plural, so the form datas does not exist.
It even has the rarely used singular datum as it is just Latin for "given", but using data instead is generally also regarded correct.
You're still giving them market share and training yourself in their software. When you need to search up online how to do a gradient, you give views to tutorials for their products.
GIMP is fine but who can find me replacements for After Effects and Premiere Pro? I need software for video editing/motion graphics and these are the two apps keeping me shackled to Adobe for now…