Note that that's just the ones in a row now, not total count.
As a creator of eclectic content (at least in terms of science/debunking for TF) I would fell so bad about releasing 16 videos in a row one the one subject. it's like if I did 16 videos in a row on Solar Roadways, or 16 mailbags in row.
Yes, that makes it sound really bad. If a prominent YouTuber (100k+ subscribers), started doing that. You would think their channels viewership would disappear.
Given the (apparent) lack of restraint, in making sixteen consecutive YouTube videos, heavily criticizing Elon Musk.
I'm surprised, they have (substantially) avoided mentioning political things and/or other characters, such as the president of the US.
They (Thunderf00t), have been known to heavily criticize, and continually make YouTube videos, against another person or people, in the past.
I guess some subject areas, seem to get under some YouTubers skin, and they have difficulty resisting, making YouTube videos criticizing them.
I've forgotten the name of the channel (honest*****), but there has been an electronics channel, and if you mention batteriser, solar roads etc. They seem to get activated. (Just kidding!).
I think one or two videos. With more if they start attacking a persons channel, and similar activities. Is fine.
But 16?!

As I've said before in this thread. If they gave more balanced views, and didn't repeat themselves, from time to time. I think it would be better.
In the 'old days' when such things would have been actual TV programs (e.g. Scotty Kilmer, car repairs). But also in modern times, with some of the bigger YouTube channels, such as Linus Tech Tips or Mentour Pilot.
There would be video producers (job names can vary) and/or people to advice and discuss the upcoming video/TV production(s). Allowing suitable moderation of the new videos.
To some extent the YouTube comments and Forum comments (if there is an associated forum), can help as well.
As a final comment. I'm both amazed and very pleased, that from viewing a somewhat wide-range of mainly technical YouTube channels, in recent months. They have been almost 99% political free (except occasionally some have done tariff impact videos, and similar), and avoided mentioning the current situation.
Which is sensible, as if you say things against one party or other, you could end up alienating, almost 50% of your American audience.