pinging "updates taste good" makes it so that normal players can get a little peek into what is coming up, and also lets them know "hey, an update is in the works and will be ready soon". If someone reads "beta test" and thinks that the update is out for everyone, that's on them for a lack of reading comprehension
#New role for beta besters
dry cave
signal hazel
you'd know right away what the announcement was about if you bothered to read the first sentence.
signal hazel
you could have just opened the #📢announcements by either tapping that notification or navigating to the channel yourself
or read it in-game, but as you said, you were already on Discord.
lost atlas
Imagine reading