As mentioned, the announcement came very abruptly. At the time of writing, the Reddit post is stated as being up 10 hours ago. But the announcement itself says the delisting of these older Need for Speed games will happen starting 31 May 2021. Even with time zone differences, this would mean that at best there’s a couple of hours left before they are gone.
If you already own these games though, you’ll still be able to play them normally. Online functionality will remain until 1 September, when EA shuts down their servers. Beyond that, offline is the only way you’ll be able to play these Need for Speed games.