Obligatory aspect marking is extremely common all around the world. While within the Indo-European family Russian might represent more hassles for the learner than certain other languages, it is not particularly unusual in this respect.

(Within the IE family, incidentally, combined aspect, deixis and path is marked on motion verbs also in Ossetian. I am sure there are some other IE languages that do it too.)

Right, but usually (except in a few corner cases) this is done with separate helping words (e.g. in English: "to cook up" v. "to cook") which are usually pretty uniform and easy to pick up through osmosis. Such that it generally isn't even taught in grammar courses (and even educated English speakers most likely won't even be even consciously aware this is what they're doing).

Meanwhile in Russian it's a much bigger thing -- the markings are much more complex, and every grammar book and every dictionary addresses the subject.

No, there are a large number of languages around the world that mark aspect with affixes, apophony or root suppletism just like Russian. I can only assume your knowledge is limited to a small handful of probably mainly IE languages. I strongly recommend looking at an introduction to aspect whose examples are drawn from a wide range of linguistic typologies such as the Oxford Handbook of Tense and Aspect.

Recall I was simply attempting to explain why Russian verbs are sometimes confusing to foreign speakers. My quantification of the distinctiveness of the Russian system may not have been quite correct -- but it was completely ancillary to the broader point I was making.

This sounds a bit obnoxious, actually. I should have said something like "Your clarification is very helpful, and your points are perfectly valid."