max-ebb ... of course it is a personal opinion .. i have not proposed myself to be called - all-knowledgeable "big brother" ...
always better = the reading, understanding, versatility, interpretation of light measuring ... ya, with external light metter...
yet, i have also mentioned that it is not neccesserly comfortable all the time, and i have also mentioned that most serioius cameras are quite satisfactory generally once a photographer knows what and how the camera measures....
spot light metter - it is very far from being versatile for general use. light metteres like pro gossens (and sekonic too) are far more versatile as proffesional tool - with incident/refelcted/spot reading (at least with possible attachments for gossen pro).
back light situations and alike, wether in studio set up or in natural light are much better evaluated with exterrnal light metter .. yet, an intelegent and experience photographer will do well with accurate and reliable in-camera light metter ... same about close-ups basically ...
and ya, there are cases of 1inch distance of subject lens ... is it a common photographic situation ?

i think even archeology reproduction photographer and alike wouldnot say it

besides, ya, u r rite, there are cases where it is eassier to read with in-camera metter of slr or special attachments that read off film plane (groundglass) with large format and probes ...
moving subjects ??? usually, a predifined light reading is more than sufficient ...
honestly, the issue auto exposure etc, are more a matter of "not being ready" for photography, rather than moving subjects ... with moving subjects, i would be a bit more concerned with focus rather than light ...
super speed changing light situation is a different thing - true ...
besides, though i think external light metter is best, i actually do use built in light metter of the camera many times ... and there are many times when i ignore even that .. just guess .. and i do it very well when im in focus (my mind) ...
still external light metter is the best ... u will learn how to play with light like a good violinist knows how to play his solo with closed eyes ...
