Hachi was right. 65% confidence
Spotlight as Universal Power Tool
Article [7] confirms Spotlight received a 'huge upgrade' in macOS Tahoe, directly supporting the thesis of Spotlight evolving into a power-user tool, with continued coverage of macOS updates (Tahoe, Golden Gate betas) suggesting ongoing OS evolution. There's no evidence Apple scaled back Spotlight or that power-user interest declined, which would have matched the falsification criteria, though details on Golden Gate's specific Spotlight changes are sparse.
What would prove this wrong
Apple's next macOS release scales back Spotlight's capabilities or leaves it functionally unchanged while power-user adoption and coverage of it stalls or declines.