I've been using Slack a good deal more recently, and much like Teams'
@everyone and Google Chat's
@here is a recipe for notification-geddon that's significantly overused in a lot of communities.
Did you know, however, you can turn them off? Unfortunately it's a channel-specific change, but here's how you can do it:
Here's a GIF:
Alternatively, here's how to do so through channel settings directly:
Finally, if the thought of going through each channel and setting this is too burdensome (I don't blame you), reach out to your workspace admin to request these are restricted across the Slack community as a whole.