Some tools are easier to learn than others, because of the nature of their design.

Yep, and modern computers are incredibly hard to understand tools, by nature of their design. By trying to hide this complexity from users you are creating more (unnessecary) complexity and through that make it even harder for users to understand how the system works all the while potentially limiting its usefulness. Free software is about enabling users to fully utilize their hardware, not about making them slaves to a software. Linux is the most practical FOSS OS we have and it works on 40 year old principles, like all other major operating systems, we should focus on making the most of it, not on hiding that.

If you feel something could be solved in a better way you are free to do so or at least find someone to do so. If you are unable to find or comprehend existing documentation, for whatever reason, I'm certain you will find someone willing to help you in no time and free of charge. But don't complain if your only problem is that you want to stay ignorant. There are plenty of commercial offerings for that.

If a tool was over-engineered and its alternative was perceived as more straightforward by the average user

The problem was that Linux installers are less over-engineered then some people feel they should be.

An English speaking American could very well enrich their life by learning Spanish

The point was, that if they don't want to learn spanish, then they have no business complaining about being unable to communicate when in spain.