This is probably going to be a hot topic and I will probably get some heat in the comments I'm sure. This is in no way factual or scientific, but just my opinions from experience. If you think aeration every fall is what you want to do that is great and you will get results. I personally think aeration every 3 years or so and then dethatching in between has yielded the best results in my own lawn.

If you own a lawn care company, aeration and overseeding in the fall is going to be your best bet, as it will get great results and dethatching is way more involved when it comes to removal of the lawn debris pulled out.

Sunjoe dethatcher (corded): https://amzn.to/3k8YevM
Sunjoe dethatcher (battery): https://amzn.to/3m8W7uf
Corona manual aerator: https://amzn.to/37R4SAX

Cool season lawn care guide: https://thelawnwhisperer.net/products...

The whisperer pack (products I use on my lawn): https://thelawnwhisperer.net/products...

*the above links are affiliate links