Protecting the brand (yourself) is important.
To distinguish the brand (yourself) from others, the brand (you) has to set something people can look up to as a way to differentiate their experience with them (you).
What the brand (you) likes, follows, engages with etc defines the image of them (you) and the right market fit (their feed).
Accessibility is a huge factor for a commodity (sellable parts of you as a whole) whilst some blocking may be necessary for setting the cultural expectations for the brand (you).
If the brand (you) block people from certain group and it is public, that might work as a signal for what the brand (you) stands for.
Let's suppose the brand (I) blocks a mark Zuckerberg and Facebook, then that works as a signal for that the brand (I) cares about privacy and against people who exploit that.
If the brand (I) only uses English to tweet, then that might be a signal for which audience product (I) is made for.
If the brands (yours) block list isn't diverse, it might signal as a racial/ethnic/gender/sex bias.
As a newcomer you don't know how important it is to take this into account.
> It is perfectly okay to not look at Twitter for hours or even days.
> Do not worry that this might be confusing: Twitter users can easily skip over tweets in languages they are not proficient in...
Who is the target audience of a text like this? Do people feel they need someone's permission to block someone, or to skip Twitter for a while, or to write in whichever language they please? Honestly!