Judging by https://unixism.net/2020/05/what-kind-of-traffic-does-hacker... and https://news.ycombinator.com/item?id=30481230, surviving a couple loads per second up to 25 will get you through many slashdottings, and with a solid symmetrical home connection you have a very good chance.
If you have video, you're not going to survive a slashdotting, but 5Mbps will let you have about one viewer with a smooth experience, while 20-30 viewers could watch the same content on 100Mbps. Or maybe you want to deliver 4k and it's zero versus several peak viewers.
This isn't about getting tons of nines of uptime, this is about people enjoying the page a strong majority of the time they're visiting. That needs a certain amount of speed unless it's a super lightweight page.