Lol I get where you're coming from, but I like to think about everything I'd like to do, so that when an opportunity arises to do one of the many things, I'm more likely to capitalize on it.
My issue with 5 at a time is that, while more manageable, for me, it defeats the purpose of a bucket list, which is to spell out everything you want to accomplish over a lifetime, not just in the next arbitrary timeframe of a few weeks/months/years.
I appreciate your perspective on it! I definitely have shorter lists for stuff I want to do in the nearish-term.