Mid summer turned 5?
Dang that's barely a hold out.
you know your kid, but generically, if its a boy, to me I would be a strong lean to wait a year pandemic or not.
Either way for me (with the benefit of hindsight) I would do what I could to spare what would be a younger Kindergartener this weirdness. My kid had an April bday, so wasn't really an option, but she's only about 45 days older than the start of kids that did get to wait another school year... And for her, by about the 4th grade I wish we had that option. Now, going into 9th grade, I realize the 1-4 grade was just a tough time and its all good. You can't look into their brains and know what they're ready to consume. Thankfully she was socially and emotionally mature enough that the early learning struggles are just a blip in the past.
Obviously I have no idea what your personal situation is, and I dont have to live with the ramifications of these stupid opinions.