The days pf 100x are over in Bitcoin. So, your right, 42% is actually a huge return for three years but imagine holding for 10+ years and bitcoin does 70x to 100x that is quite a lot of returns.
Oh man....over the course of my time watching bitcoin I've seen gains of over 100x. Specifically I remember being able to buy it at $200 back in 2015 or so, and every time I think about what could have been for me I just get this big ol' cloud of gloom come over me. I do think you're correct that we're probably not going to see that type of growth over a period of 9-10 years, but as I've said many times before I never in my wildest dreams thought bitcoin would reach $1k.
And then I thought it'd never reach $10k.
Or $50k.
So I guess bitcoin is like a boxer that really shouldn't be judged a KO by the referee until the count is finished. There's probably a way better analogy, but I've been awake for at least two sunsets so cut me some slack.