My employer, a F500 non FAANG company, has been doing something similar for a long time. During the summer they have what they call summer hours. It’s usually from June through August. Friday’s are mostly off. That is if your work is complete then you can leave early. We have a large remote workforce so I assume quite a few of those remote workers don’t work at all on Fridays. It is a nice perk and I do hope it continues. It does not seem to impact our ability to hit our targets in any negative way. No idea if they ran any numbers to see if it impacted them positively, but we all like it and we have been hitting our numbers for the most part across the company.