That's been long overdue and will hopefully help Matrix make inroads into more conservative organizations; I believe the tech is really promising. It's a definite liability, trying to introduce people to Matrix, when the de-facto default client's name evokes all kinds of unhelpful associations – it doesn't sound like work at all and it does sound like gamers, toys, apparently even like a far-left political organisati…
Although I don't see widespread adoption yet if Matrix bridges aren't implemented by the common household names. Conservative organisations use solutions from Apple or Microsoft. There is no deeper thought behind it.
That said, I think they just did it because of trademark issues. Private users are probably converted by their environment and probably don't think too much about the name.