I like this since it forces people who do not like having their world view shaken up to have their world view shaken up. This will either limit echo chambers on the platform or cause people to leave Twitter. Most likely cause people to leave Twitter which I am all for since it is a big tech spyware platform filled with toxic people.
Nostr is were it is at! Not mastodon.
BTW I do not have a Twitter account nor do I use Twitter.
You obviously don’t use Twitter if you think well-argued/constructive challenges to worldviews are the sorts of things people need the blocking feature for.
For some twitter users use the blocking feature to live in a echo chamber. For some it is to block spam. For some it is to block rude people.
The con of no blocking feature is not able to block spam.