How common is gatecrashing for weddings?

About 2 years ago I first learned about 'gatecrashing' during one of my uni classes, and we watched some videos where people had to do some challenges. I thought it was like some niche thing but then all of my classmates knew about it and some even participated before for their friends or cousins. I was even more shocked that my mum also knew about it and said it was quite a common thing among her friends' kids and even my cousins, but she also didn't know how the 'tradition' originated. The prof was an angmoh so he also didn't know haha

I was quite surprised that I didn't know such a practice existed in Singapore at all until the class, especially since it seems like it's quite a public thing. Maybe because I don't have many friends, and cousins' weddings is just go banquet only so I've never seen it before (never see = doesn't exist haha)

How widespread is 'gatecrashing' in 2025? Is it obsolete already? How did this practice originate??

EDIT: To make it clear, I'm referring to the practice of making the groom and groomsmen do some challenges or such things on the day of the wedding, not the practice of showing up uninvited!