Can't speak for any other Americans, but for me, the objection is rooted in having to watch a video at all. Reading the subtitles in a video is still more time-consuming than reading a transcript (which, mercifully, someone else here in the comments did provide).

The second reply got flagged for being rude, but it's right.

Not wanting to watch a video is valid. Complaining about "foreign language" when there are dubs, subtitles, and transcripts, all human translated, is not valid.

And did the first reply seriously get flagged to death for saying "Dear american"? I can't see any other words in that sentence that I could construe as offensive...