It literally says it doesn't apply to VODs.

what i meant by "VODs" here is highlights and some people used it to archive their full streams past broadcast and it's also a feature a lot speedrunners use to archive their runs

@Gamebuster1990 Please learn how Twitch works before spreading misinformation. It doesn't apply to "Past Broadcasts", which are regularly deleted anyway. Highlights are (well, were) how you actually preserve stuff long-term on Twitch. And as it says right there in the thing:

If you are still over 100 hours [of highlights] after 4/19, we will begin deleting Highlights & Uploads for you.'

A truly embarrassing number of people read "doesn't apply to past" and stopped reading the announcement.