No, annotations are deprecated, you can't add them to videos anymore. [0]
[0]: https://youtube-creators.googleblog.com/2017/03/keep-fans-en...
So there are hacky half-working workarounds, but otherwise youtube just told everyone who cares about their videos to go and kindly get fucked.
It is for example not uncommon in teardown, some done by leading engineers in their entire field, to find out what some proprietarily marked chip is a few days after the fact. This is not a “fuck up”.
Reediting and reuploading a video just to change a single (but possibly important) detail is not only a colossal waste of time and effort that could be better spent on other videos, as far as I know it will also present itself as a new video.
Your comment makes no sense whatsoever.
In some cases such things were applied quite heavily too.
And thus the point of my previous post is that for people doing serious work with their youtube videos providing corrections and such via the description is entirely untenable.
I'm sorry you've only seen spam, but cutting off another's tool because some people can't use it correctly is a severe case of FYGM.
I don't think they should take it away completely, just limit it so avoid the aforementioned 'myspace page' overuse.
It just means anyone in this position has to join the partnership program, but they can continue to NOT show ads on their channel (I don't like ads, so I don't show them on my channel).
10,000 views is honestly not a lot. If you follow any reasonable Youtube strategy for creating content, you'll reach that in no time. It's a minor inconvenience at best.
It does worry me tho, because in the future they may do other things to deter third party links.