Pre-emptively blocking people is good for everyone.
Seriously. The amount of times I see people whining or laughing about being blocked when they 'haven't even done anything' just tells me that not many of you know its actually a really good way to properly curate your online space, and its not something to be offended over.
Blocking is a form of protection. Its also a form of mutual protection.
Especially on websites that don't offer more extensive or usable filtering, tagging and avoidance options. Twitter, for example.
Blocking isn't some personal insult. Its a method of saying; hey, we clearly shouldn't interact, so I'm gonna build this soundproof wall between us to make sure we can't.
To use The Salmon Analogy, if I run a restaurant based on salmon as the main ingredient, and you're allergic or or severely dislike salmon, me refusing to serve you isn't a personal sleight. Its me recognising that you can't or really don't want to eat salmon, and its me protecting you from an unpleasant experience and myself from you inevitably screaming at me for serving salmon.
If you are someone who enjoys 'objectionable' content, such as gore, and you stumble across an extremely anti-gore blog, its absolutely a viable option to pre-emptively block them. Maybe your paths never would've crossed, but its better to ensure they don't than potentially wind up the victim or hate or harassment.
Blocking is an absolute sure-fire way to ensure that you do not see something you do not want to. It should be used as liberally as you want to.
