Hi @Chrayley
Aibek is here from Speedimize.io
So sad to hear your disappointment in Shopify Experts and I agree with you that 5* reviews don’t give trust in their services.
Instead of this, try request to send you examples of their “real work with real examples”.
In our approach with customers in our agency, we always show our recent works and differences before and after optimization.
Malicious code and undermining work of others, this is not the professional attitude of true experts.
If you wish, we can investigate your store and find is there is a real optimization takes place or just a few modifications to your code to avoid PSI crawling robot.
Hope that will restore a little your trust in experts.