The landscape shifts, but the underlying requirement, checkable, carefully maintained data, hasn't.
Where competitors are untidy, current data is sufficient to take easier discovery. Disagreement between sources forces ranking systems to guess, and a guess is seldom favourable.
Generally, it's one of the cheapest routes to more direction requests still available in a crowded metro market. Broadly, a single dated field can propagate through review platforms long after the original entry was fixed. Prefer removing a wrong listing to leaving it half-corrected.
Outbound notes
Each matching source adds a little confidence; each contradiction subtracts more than it adds. Almost always, accurate records are one of the few local levers that still work without a budget. Verify what a competitor within a single postcode has claimed before deciding where to submit.
Treat the primary category as a single source of truth, not as a field to be improvised per site, give or take a reporting cycle. Almost always, getting this right buys visibility in the map pack without touching the website at all. Even therefore, data flows outward from aggregators, therefore an error at the source reappears in places no one submitted to.