This type of decision has fully cemented that Google is an advertising company. Every decision they make is to benefit advertisers regardless of how it affects users and developers.
Maybe the entire Manifest V3 concept is "Gish Gallop" applied to software design. Create so much of a bag of questionable features that people are just trying to keep up with the nonsense, and hopefully it keeps us divided and unable to actually able to mount a solid response to their (not really buried) real goal, which is to stab at the ad-blocker industry.
It would be interesting to consider their business values on proxies too; while on the abstract level, it dilutes tracking data quality (I don't really live inside a data centre in Stockholm?!), it might improve the value of their more broadly aggregated data (we've seen this user's fingerprint elsewhere, so we can give you a more accurate location than Geo-IP lookup does)