just because it doesn't typically work that way doesn't mean it shouldn't. blocking should absolutely be a two person thing. block from contact and communication, and block the person from being able to stalk and retaliate or harass you in return.
why is it bad to want that?

exactly. and trying to downplay potential users as stupid before they've even used a social media platform isn't going to exactly make them want to stay. or even try in the first place.
just makes mastodon look like a place where nerds reign free and normal folks won't be able to participate effectively.
if you want to make mastodon a destination and not a niche corner to be avoided, this is not the way.
i agree with you completely.
edit: I should clarify, the "guide" above is the thing insulting users. the guide is inaccurate.