No I haven't, but 100% agree with it. I didn't know about the temp track thing (well I knew they used temp tracks, but not how it affects the score). However, I knew that the reason Marvel movies aren't memorable is pretty on purpose, and while "safe" is the way it's described, it's more to do with wanting the music to fit from film to film with eachother. The one "flaw" if there is a flaw to the MCU is that method of keeping the whole machine very neutralized, from the style of shooting to costumes to the editing. Even the movies that are "out there" like Doctor Strange really aren't all that out there. It's just most noticeable with the score.
Watching the video when they ask "hum something from a Marvel movie" all I thought of was "Ooga Shaka, Ooga Shaka, Ooga, Ooga, Ooga Shaka"
Like everything else it's a pretty copycat industry. A lot of what we are hearing now stems from "Dark Night"-ing of movie soundtracks - and the popularity of the sounds of Hans Zimmer and James Newton Howard who composed it. In fact I mentioned the Pirates soundtrack - but even that isn't THAT original, as he ripped himself off from both "The Rock" and "Gladiator".
This conversation made me think of Thor:Ragnarok - which actually did some unique stuff with score getting Mark Mothersbaugh and they put some pretty funky stuff into it. But still not all that memorable.
Yeah, those like 4 bars from the credit roll are fairly familiar, but I wouldn't exactly call them catchy.