> But for some reasons professional programmers are judged under a much higher moral standard

Not in the real world. Most programmers who are trying to get a job done won’t avoid CUDA or AWS or other tools just to avoid “contributing to a monopoly”. When responsible programmers have a job to do and tools are available to help with the job, they get used.

A programmer who avoids mainstream tools on principle is liable to get surpassed by their peers very quickly. I’ve only met a few people like this in industry and they didn’t last very long trying to do everything the hard way just to avoid tools from corporations or monopolies or open source that wasn’t pure enough for their standards.

It’s only really in internet comment sections that people push ideological purity like this.