A handful of years ago, before anyone had figured out how to properly optimize for attention, we all had small-screen phones. The “small phone” problem is really just that it’s not as addictive. Apple wants you to spend more time on-screen [0] and so do you [1.] I really hope you’re not thinking about spending less time on-screen. Technology companies love you and care about you. They usually know what’s best. You should probably just get a bigger screen.
[0] see: massive financial incentives, developer tooling to help maximize engagement, product design focused on extended use, notoriously useless screen time feature etc
[1] we don’t have exact mini sales, but estimates are they were around 6% of total iPhone sales (aka: low, but billions a year in revenue, enough to keep barring other incentives) - more revenue than many other Apple products or the SE, for example. Even if you’re Apple you don’t axe billions in revenue for nothing!