Constitutional crises involve fundamental breaks in the working of government that bring two or more of its elements into direct conflict that can't be reconciled through the normal means. The last of these by my accounting was over desegregation, which was resolved with the President ordering the Army to force the recalcitrant states to comply. Before that was a showdown between the New Deal Congress and the Supreme Court, which the former won by credibly threatening to pack the latter (which is IMO a much less severe crisis but still more substantial than anything happening today). However, that was almost a century ago, and Congress has not been that coherent lately.
If "I think this is a very bad decision" was cause for a constitutional crisis, any state with more than three digit population would be in constitutional crisis perpetually.
This happened as recently as 2021-01-06; strong evidence that the military subverted the president to call the National Guard into Washington DC and secure the electoral count.
I'd say it was narrowly averted though.
And generally courts/judges just choose the scope of their legal opinions based on how far reaching they want the legal principles to apply.
IMHO, copyright-ability of APIs is so far away from their political agenda that they probably just decided to leave the issue on a cliffhanger...