What are your thoughts on the 4-year cycle?

I constantly see people talking about the 4-year cycle with absolute conviction that it will hold true, claiming that we will see the true “bottom” this autumn. I recently put 30% of my portfolio into bitcoin following the crash, however I’m now considering selling (since it’s only gone sideways and I won’t be at a loss) and waiting for it to drop more before buying back in. I’m expecting a lot of Smartass Redditor responses but I’m interested in hearing peoples genuine thoughts on the 4-year cycle