I went out this morning and took a closer look based on all of your posts. I counted approximately 10 weights in a row on one wheel (my others were similar), so roughly 2.5 oz per wheel. My tires also do not have marking dots pointing out the heaviest and lightest points on the tire, so the tech lined up my valve stem with the DOT info.
This article from Tire Rack regarding wheel weights says that the general industry standard is that the weights should not exceed 1% of the total weight of the wheel and tire assembly. In my case, 20.3# wheel + 23# tire (
from TR spec) = 43.3# or 692.8 oz. 1% of that is 6.9 oz, and each wheel is well under that.
I agree that visually, it looks to be excessive. Could the shop have done a better job? Sure, I think they absolutely could have spent more time rotating the tire to get as close to zero weights as possible. However, for my use case, I don't think it's worth my time returning to the shop. The next time I need new tires, I will ask for them to try and minimize the amount of wheel weights used.
Thank you for helping me learn!