[lmm]

It was very much within the scope of his job duties. Many of his colleagues were encouraged and rewarded for making presentations on the same topic using company resources on company time (with the opposite conclusions).

The idea that you can investigate something and present your good faith effort at the truth, with evidence, and be fired for that, is pretty scary. Like imagine several of your colleagues do comparisons of PostgreSQL and MongoDB on your internal blog, showing some benchmark results; you think that's not the whole picture and do your own comparison showing some other benchmarks. And then you get fired, not because your benchmarks were less rigorous or your writeup was poor, but because they don't like your answers. That's not an environment that's going to lead to good technology choices and an effective company.