Older MacOS versions had stuff like the chess game preinstalled for no reason, though I don't know how current versions look like.
I also don't know how easy it is to remove preinstalled apps nowadays. Back in the day, you could disable System Integrity Protection, remove whatever you want, and re-enable Protection afterwards.
Personally, I remove about ads incessantly because they're not just ads anymore nowadays.
They serve double-duty as trackers, and with how easy it is for malicious actors to hijack them (and ad businesses like Google evidently not giving a fuck), they're a genuine security concern, too.
If ads were just ads, then I'd be fine with them. But their current state is just... bad.
But please tell your contacts that you're using bridges, if you haven't already.
You are effectively giving away encryption keys to a third party, since those messages need to be decrypted and re-encrypted mid-transit.
Everyone who is part of the chats you use bridges with deserves to know about that fact, at least.
Which is precisely what makes Matrix the better option for this, albeit still not great