I understand the sentiment.
The point of (a) if I did GPB right and (b) verified by site with Google search console, I don't need to worry about anything... I am not 100% sold on that, but maybe I am just a pessimist
GPB help page referencing multi-sourcing data(web crawl, 3rd party, etc,). Even if your verified your GBP, but your listing data isnt consistent where data is crawled, your profile has a higher likelihood of receiving Google Updates/publishing changes to your attribute information.
A question that may be worth asking is why do local search publishers and AI searches use data/signals from aggregators(or directories sourcing from aggregators) if there is no value and they have their own self-serve profile update and verification tools?
One possible answer: to generate confidence/trust in location data they receive from different sources so they feel confident in displaying it. Another may be, no data set is perfect and corroboration = confidence.
Aggregation engines in this space are typically designed take in large, complex data sets and use proprietary methodology and data science models to identify and score disparate sources referencing the same identity to build multi-sourced records. Most publishers mentioned on this forum are data aggregators(
we just dont call them that dirty word). They multi-source data for businesses and build technology that makes automated attribute and profile publishing decisions based on models they have developed. No one gets its right 100% but attempt to identity the instances of incorrectness and iterate on their platforms to get it wrong less of the time.
yext did an interesting study last year on the topic re: benefits of location management across a wide variety of sites and the
impacts in terms of Google clicks. It is also interesting in the day AI to see tools like chatgbt site their sources for business listing information - sure Google is on there, but definitely not the only source.
just my two cents.