If you go to a wedding and don’t say much, for whatever reason, nobody will care or remember by the next day.
Or not.
I still have the shudders from a wedding in 2012. The sit down bit was looong and the tables were large so you could only really speak to the people on either side of you. I was between my husband and a stranger.
I don’t find small talk easy but I’ve learned to do it because, as others have said, it’s part of the deal when it comes to being in social situations. I’m quite practised now.
But by god the man sitting beside me made zero effort. I gave it my all to start or maintain any kind of conversation but got zero back. Husband chatting merrily to the person on his other side so I just got to sit like a lemon for a few hours. It was excruciating and miserable and in that situation no, being ‘quiet’ doesn’t get you a pass from trying to make or reciprocate conversation.
If you’re in a ‘forced conversation’ situation that you’ve agreed to participate in, such as a wedding or a dinner party, you do need to make some kind of effort or you are being rude.
If someone asks you a question about yourself, you ask one back. You can ask the same question - the other person has already done the work for you.
Many people have had to learn to do this - it doesn’t come naturally to everyone. Failing to meet them halfway is rude.