I am not debating if its considered predictable, just that it appears extremely chaotic and its natural that people are distrustful of such a object being an accurate clock
Like I and most people know about the atmosphere and orbits to understand WHY seasons change (not to mention we are born with instinct on the matter). When you try to imagine why a fire ball has a 11 year clock built in you go wtf, the only repeatable plasma behavior we see are really fast clocks. anything that takes 11 years is gonna be funky. since it takes 11 years and the mechanism requires complex MHD simulation to model you might start to think if there are underlying factors which can cause the clock period to change in a way that we have not seen. 300 years = 30 data points. That is not a lot compared to what most other sciences get, and the cause-effect relationship is alien and downright complicated to many systems we find familiar.
I now wonder if they found star-spots on other stars using imaging techniques to see what the star spot cycle looks like in in different age stars
I imagine its a related to a bunch star things that can be considered vaguely similar (in regards to modeling complexity and chaotic nature) to global warming, el nino, ocean currents, tectonic shifts, eruptions and so forth. The question is, if there is a equation that relates these kind of things to the sun spot, how stable are the factors and can a star runaway condition happen that can cause a big rapid shift in one of the parameters that effects the spot clock while otherwise not cooking us, changing the color of the sun or doing something obviously weird that would have clued us in from astrometric observation of foreign stars.
I personally just see a video like the one I linked and feel a mixture of awe and confusion, which is obviously not something you want to feel about a clock. But it does seem like a very good power source that is at least not going to turn off.. meaning so long it does not explode or burn us we are ok (the reaction mechanisms feel nigh unstoppable)
And to add to the confusion, for many people.. a lava lamp, which at least looks similar, is the definition of random number generator, rather then clock.
https://en.wikipedia.org/wiki/Lavarand