In my experience, random internet people looove telling others that what they do is horribly wrong.
Admittedly, it would be bad if your buns consumed vast quantities of ice very rapidly. This is very easy to understand, imagine yourself gobbling up like a pound of ice in moments. Youd probably get an ice cream migraine and possibly throw up too.
But -you’re not feeding your buns a ton of these icicles at any one time. The weather is hot -rabbits dont do well in hot weather. They do need cooling.
Banana and strawberries are bunny safe if given in moderation, esp strawberries. Strawberries taste sweet but if you look up the nutritional content, you’ll find they’re mostly water. I have a family member who has type 1 diabetes, she can have strawberries no problem. (She has obviously consulted with her diabetes doctor).
I’d trust you to give small amounts of frozen treats on hot days when buns really need cooling. I’m saying this because you’ve been on these forums for an extended time so we “know” you a little bit 🙂