What's your decision tree for when you feel you need a SPA in 2025?

At least some of what you may not be getting in this space is how many developers right now seem to be hugely deprioritizing or just dropping SPA from their decision trees lately. Recent advances in CSS and ESM and Web Components such as View Transitions and vanilla/small-framework JS (ESM) tree-shaking/"unbundling"/importmaps give MPAs more of the benefits of a complex SPA with fewer of the downsides (less of a "mandatory" build process, smaller initial bundle load). It is easy to feel less of a need for "complex SPA" to be on your architecture options board.