Because it’s literally what’s happening? X has not named a legal representative in Brazil. Therefore it cannot do business in Brazil. Thus, all ISPs are ordered to block X so that it cannot do business in Brazil. (same link). Starlink, as an ISP, said they would not comply. Now they are complying. This has literally nothing to do with internet speech and everything to do with complying with a country’s laws.
If you have an extra bedroom that you can use exclusively as an office, it’s pretty great. When you’re in your office, that’s “work”, and the rest of your house is “not work”.